Это видео недоступно.
Сожалеем об этом.
Sum of all angles in quadrilateral is 360° (Theorem and Proof)
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- Опубликовано: 23 окт 2012
- Visit us at - www.risingpearl.com
Like us at - risingpearlfans
Friends,
This is a Math video. This is our third webisode (WB-3) on "Series 8 -- Quadrilaterals".
In this video, we learn that sum of all four internal angles in a quadrilateral is 360°. Then we go ahead and prove this theorem.
This video is suited for class-9 (Class-IX) or grade-9 kids.
Cheers,
Friends at Rising Pearl
SIR ,thanks a lot.amazing explanation.you are great.
lovely
it is very helpful
Hi, Glad you liked the video and found it helpful. Thanks for your feedback. Pls check out other videos on the channel
ruclips.net/user/dostotussigreatho
Cheers,
Hello
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg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Thank you a lot for helping me, though I am in class VII and it is made for class IX, it helped me a lot in my maths project. Thank you a lot.
Nice explanation... Watching after 9 years
Good teaching sir 👌🏻
Thank you 👍🏻👌🏻🙏🏻
Hi Dhiren,
I wanted to share that last month, I have launched a new website called dailymathpro.com/.
I post one new Math question everyday. Anyone can answer the question in the comments section. Everyone is encouraged to do so. It is free to use and no registration is required.
The very next day, I post the answer to the previous day's question and the new question for that day.
This will greatly benefit anyone who is interested in Math and is preparing for competitive exams. The questions are designed to make student think outside the box.
Pls do check it out as you may find them helpful.
Cheers,
Which app you use to make video
thank you very much!!!!!!!!!
nice bro well done
Good video ...sir
Hi Surya, You are very welcome! I am glad you liked the video and found it helpful. Cheers,
Sir in second last line it is angle BAD not angle BAC
thanks thanks
It is very helpfull for me
Rudar - Glad you liked it. Thanks for your feedback. Cheers,
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
Thank u sirrrr it help mee a lot during this online exam, thank u very much sir
Hi Aruna,
You are very welcome! I am glad you liked the video. I am happy to hear that you did very well in your exam. Congrats. Pls do check out my other videos as you may find them helpful as well.
Cheers,
Hi Aruna,
I have started a new website dailymathpro.com/ where I post one math question every day and anyone can view and answer it. I provide the solution the next day. Pls do check it out as you may find it helpful.
Cheers,
Thnx yaar....because this is my school project yaar....thnx a lot....
Leena - You are very welcome. Glad it helped. Cheers,
Nyc explanation
Hi Harry,
I am glad you liked the video and found it helpful! Cheers,
thnx dst
Nice video
nice video does anyone know abt working models on quadrilaterals ???
sharadha sivasankar
Good
THANK YOU
Tisk tisk
Blazing Infernape proofs are hard k
Thank u soo much sir 😃
Thanks!!! now I understand this
Gaurav - I am glad you liked the video and found it helpful. Thank you for sharing your feedback. Cheers,
Sir can I write it like
To prove - angle ABC + angle BCA + angle CDA + angle DAB? Pls reply quick
Really thankful ❤️
Sir if we draw 1 more angle bisector BD then their will be 4 triangle then
Hi Abhishek, That will be fine as well. That will work too! Pls check out new playlists that contain all videos for Class-9 Math for Numbers, Polynomials, Coordinate Geometry, Linear equations, Intro Euclid's geometry, Lines and Angles, Traingles, Quadrilaterals, Areas of Parallelograms and more. Hope you like the videos. When you get a chance, pls do share your feedback. It would be great to hear from you. Thanks! Cheers,
Hi Abhishek,
I wanted to share that last month, I have launched a new website called dailymathpro.com/.
I post one new Math question everyday. Anyone can answer the question in the comments section. Everyone is encouraged to do so. It is free to use and no registration is required.
The very next day, I post the answer to the previous day's question and the new question for that day.
This will greatly benefit anyone who is interested in Math and is preparing for competitive exams. The questions are designed to make student think outside the box.
Pls do check it out as you may find them helpful.
Cheers,
If we divide the quadrilateral into 4 triangles by drawing 2 diagonals then (180+180+180+180)°=720°..... sir please help....
Hi Chandra,
If you divide into 4 triangles, then it is true that sum of all angles in 4 triangles = 180 * 4 = 720. our goal is to find the sum of all angles of the quadrilateral. But then 720 will include all the angles of the quadrilateral + the angle at the center (where the diagonals meet). That angle at the center = 360 which is what you need to subtract to find all sum of all angles. So, 720 - 360 = 360. Hope it helps!
Cheers,
@@dostotussigreatho thanks a lot sirrrr
❤🙏🙏🙏🙏🙏🙏
Hi Chandra,
I wanted to share that last month, I have launched a new website called dailymathpro.com/.
I post one new Math question everyday. Anyone can answer the question in the comments section. Everyone is encouraged to do so. It is free to use and no registration is required.
The very next day, I post the answer to the previous day's question and the new question for that day.
This will greatly benefit anyone who is interested in Math and is preparing for competitive exams. The questions are designed to make student think outside the box.
Pls do check it out as you may find them helpful.
Cheers,
Isme ka break bahut mst hai yar starting ka
Other wise thank you sir
Thank you so much
Hi Bhalu, you are very welcome! Thank you sharing your feedback. Cheers,
Thank you sir👍
Very good sir
Girish, I am glad you liked the video! Cheers,
@@dostotussigreatho ty
It helped me
Thanks very much sir
Suman,
You are very welcome!
Cheers,
Nice
Sir , kya sare quadrilaterals ka sum 360 degree hi hota hai, whether it is convex ???
Can you please tell me! !!!
Hi Bhishm,
Yes, sum of all internal angles of any quadrilateral will be 360 deg. Hope it helps!
Cheers,
@@dostotussigreatho thank you so much. .sir...
Hi Aditya,
I wanted to share that last month, I have launched a new website called dailymathpro.com/.
I post one new Math question everyday. Anyone can answer the question in the comments section. Everyone is encouraged to do so. It is free to use and no registration is required.
The very next day, I post the answer to the previous day's question and the new question for that day.
This will greatly benefit anyone who is interested in Math and is preparing for competitive exams. The questions are designed to make student think outside the box.
Pls do check it out as you may find them helpful.
Cheers,
Wow
Hi there,
Glad you liked the video.
Cheers,
Nyc
Thanks a lot
Hi Madhurjya,
You are very welcome! Glad you liked the video and found it helpful.
Cheers,
@@dostotussigreatho no problem sir your explanation was just awesome. It helped me a lot.
thnx buddy
Thanks sir
Hi Ashit,
I wanted to share that last month, I have launched a new website called dailymathpro.com/.
I post one new Math question everyday. Anyone can answer the question in the comments section. Everyone is encouraged to do so. It is free to use and no registration is required.
The very next day, I post the answer to the previous day's question and the new question for that day.
This will greatly benefit anyone who is interested in Math and is preparing for competitive exams. The questions are designed to make student think outside the box.
Pls do check it out as you may find them helpful.
Cheers,
Very nice expanation
Hi Manoj,
I am glad you liked the video.
Cheers,
Hi Manoj,
I wanted to share that last month, I have launched a new website called dailymathpro.com/.
I post one new Math question everyday. Anyone can answer the question in the comments section. Everyone is encouraged to do so. It is free to use and no registration is required.
The very next day, I post the answer to the previous day's question and the new question for that day.
This will greatly benefit anyone who is interested in Math and is preparing for competitive exams. The questions are designed to make student think outside the box.
Pls do check it out as you may find them helpful.
Cheers,
One more great video.Thank u sir
Hi Shiv ram,
You are very welcome! Glad you liked the video.
Cheers,
Thanks sir soooooooo much
Hi Priyanka,
You are very welcome! I am glad you liked the video and found it helpful. Pls do check out some of my other videos as you may find them helpful too.
Cheers,
Hi Priyanka,
I wanted to share that last month, I have launched a new website called dailymathpro.com/.
I post one new Math question everyday. Anyone can answer the question in the comments section. Everyone is encouraged to do so. It is free to use and no registration is required.
The very next day, I post the answer to the previous day's question and the new question for that day.
This will greatly benefit anyone who is interested in Math and is preparing for competitive exams. The questions are designed to make student think outside the box.
Pls do check it out as you may find them helpful.
Cheers,
thank you so much sir😃
Hi Pritirekha, you are very welcome! Thank you for sharing your feedback. I very much appreciate it. Pls check out some of my other videos on this channel as and when you have time. If you do see other videos, pls share your feedback on those videos as well. Cheers,
thanks sir😃
please give me a Other video
Hi @@pritirekhaborah4809, this is my RUclips homepage for my channel
ruclips.net/user/dostotussigreatho
then if you click "VIDEOS", you will see ALL videos. Direct link for that is
ruclips.net/user/dostotussigreatho/videos
then if you click the latest "search icon" looking thing :) , you can search for ANYTHING in MY channel (and not in all of YT). Cheers,
Hi @@pritirekhaborah4809 , you are very welcome. Cheers,
it is wounderful................
thank you
Hi Sultan,
You are very welcome. I am glad you liked the video and found it helpful. Do check out some of the other videos as well as you may find them helpful too.
Cheers,
hlo
nic videos
i subed u
Hi there,
I am glad you liked the videos. Thank you for your subscription as well.
Cheers,
can u help me to pass out my exams bro!!!!!!!
here is my gmail (doakenovan3339@gmail.com)
Hi,
Please do not share your personal email or other details in this forum. Also, like I have mentioned to so many of you (who have reached out to me asking for my personal details), please feel free to share all your questions/queries here, and I will try my best to solve those for you.
Cheers,
I want to say that angle A i writte angle ADC
Heartfull thank you..........
Hi Puri,You are very welcome! Glad you liked the video and found it helpful!
Cheers,
🕉️
Manish, You are very welcome. Cheers,
Math class ninth
hello guy
Thank you teacher.
Hi Ram, You are very welcome! Cheers,
Understand in one language
I am in class 8
Same!
Same
Same.
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Need mathematically.
Who cam here last night before math exam?
Thxns it's very much helpful for me...
Hi Bhabananda,
You are very welcome! I am glad you liked the video and found it to be helpful. I have recently updated the website at
www.risingpearl.com
Please check it out as well and let me know your feedback.
Cheers,
What if quadrilateral is complex. What if it is concave?
Baom
10years Baad 😂
Legend are watching 2022
It's best video I've subscribe
Hi Amrish, you are very welcome! Thank you for such a wonderful comment. I very much appreciate it. Cheers,
Samjh nhi aaya
Thanks
please Avoid using hindi . Thank you
I'm so happy
ROSHAN BIN RAZZAK y r right
Very very badddddd
We don't like
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No no no no no no
thank you sir