I didn't even thought that any body can look at the angles of triangle from such an angle. It helped me a lot to do my project work. Thankyou team @Dont memorise for helping us out through your videos
It's my pleasure. We are glad that you understood the concept. We are happy that we could help you learn. You motivate us to do better. Keep watching our videos : )
I have never seen such a good, thorough explanation of why the interior angles always equal 180 degrees. This just goes to show the failures of the U.S. educational system, as none of my schools ever presented this. They are always about rote memorization, not the underlying theory. I had to watch a couple times, but then it clicked and the light bulb came on. Thank you SO much for this!
I'd prefer reasoning this way: i.e. driving around the corners & returning to where you came from. *At each point you deviate from going straight forward by 180-(internal angle) degrees. *In total, you go round once and arive at the same direction of walking/driving i.e. rotate 360 degrees. So combined: 360=3*180-a-b-c where a,b,c are the sizes of the internal angles from the different corners. Add a+b+c-360 to the left and right side of this equation and you get: a+b+c=180 Q.e.d.
Thank you for your kind words Wasim! To learn more and stay updated about our latest uploads, please register on our website here: bit.ly/DontMemoriseRegister Don't Memorise, Know More :)
Better than any other math video,well explained,I was quite afraid for my exam as this question was for 4 marks...Thank you for sharing such a great video
Wow , this is an awesome way of analyzing a concept. This is far better than the environment in which we were taught , thanks a lot . Don't memorize stood by it's name, we are really learning in a way we don't have memorize
Thank you do look much for putting this video.Because since I was a little bit confused,I went to RUclips and search this 😁 Thanks once again.You're the best😘❤❤❤
Really amazing channel small things are really neglected in education system but u people are even explaining from basics really great please do lot of videos
ery nice maam i am a new student i love your videos as i've started in lock down as my teacher had sent the link i 'm very happy maam please continue like this only thank you maam
Alternate which is even faster to prove is that, all triangles can be formed by cutting a quadrilateral in half across the diagonal. And since quadrilaterals are always 360 degrees, cutting the quadrilateral in half splits 2 of the corner angles in half to make a triangle every time. The two triangles formed have exactly 360/2 = 180 degrees
being a surveyor i know that the sum of interior angles = 180(n-2) n being the number of amgles. this works for any shape and number of angles as long as the figure is closed. this is how one determines the ‘error of closure’ in a surveyed figure.
A proof I learnt in high school was cut out a paper triangle and fold it so one corner is resting on the opposite side. You'll find that the other two corners can be folded in to meet that first corner so that all three corners together form the sum of the angles on a straight line, which of course is 180 degrees.
Thank you very much...clear, concise, and complete, short of explaining why it might be the most important topic in Geometry. I actually did quite well in Geometry in High School but I'm afraid that was many years ago. Although I could remember that the sum of the angles of a triangle equaled 180 degrees, I could not for the life of me remember why, which is always the most important aspect of learning anything. That five year old may be able to answer correctly for more topics immediate in their life, but I really don't think they're smarter than me... well, not all of them anyway.
It's my pleasure. We are really happy to hear that it was helpful to you. We are glad that you understood the concept. You motivate us to do better. Keep watching our videos. 😊😊
You're most welcome and Thanks for your appreciation. We are really happy to hear that it was helpful to you. We are glad that you understood the concept. Do support us by subscribing to our channel. 👍👍
For those who are unsatisfied, a quick Google search should show you the proof of the Alternate Interior Angles Theorem. It is conventional in math to use previously proven theorems to prove others.
The number 180 is arbitrary. This number has been chosen because it can be divided by many numbers, so the results (partial angles, smaller angles) would be integers. That's why the angel of a straight line is 180. And as a result of this, the sum of the angles of a triangle is 180. It can be also reversed: We can decide that the sum of the three angles is 180, then the angel of a straight line would be also 180. This is true only in Euclidic Geometry (Plain Geometry). Water boil at 100 degrees. why? The answer is the same. It is also an arbitrary number just for convenience.
zohar99100 Not quite. It is not that 180° was chosen arbitrarily. Not at all. Rather, it is derived from the definition of the circle as being 360°, with the latter being arbitrary. However, this difference is important, because there is much more justification to start with 360° than to start with almost any other number.
You're most welcome. We are glad that you understood the concept. We are happy that we could help you learn. For more videos, please visit our website - dontmemorise.com/
You're most welcome. We are glad that you understood the concept. We are happy now that you are all clear with your doubts. You motivate us to do better. Keep watching our videos. 😊😊
I didn't even thought that any body can look at the angles of triangle from such an angle. It helped me a lot to do my project work.
Thankyou team @Dont memorise for helping us out through your videos
This is absolutely mind blowing! Thanks for making me look at this in a different angle ;)
It's my pleasure. We are glad that you understood the concept. We are happy that we could help you learn. You motivate us to do better. Keep watching our videos : )
Op
Well this wayyyyyy better than my school teacher lmao
Yt
bad,sry
I have never seen such a good, thorough explanation of why the interior angles always equal 180 degrees. This just goes to show the failures of the U.S. educational system, as none of my schools ever presented this. They are always about rote memorization, not the underlying theory. I had to watch a couple times, but then it clicked and the light bulb came on.
Thank you SO much for this!
I think this Channel is Indian as I am too
I'd prefer reasoning this way: i.e. driving around the corners & returning to where you came from.
*At each point you deviate from going straight forward by 180-(internal angle) degrees.
*In total, you go round once and arive at the same direction of walking/driving i.e. rotate 360 degrees.
So combined: 360=3*180-a-b-c where a,b,c are the sizes of the internal angles from the different corners. Add a+b+c-360 to the left and right side of this equation and you get:
a+b+c=180
Q.e.d.
What an elegantly simple derivation. Gotta wonder why this was never explained in grade school.
This proof is there in class 9 math textbook
@@rudragajjar454 cbse?
Proudly adding you to the lovely list of my teachers :).
It was just amazing...
Thank you for your kind words Wasim! To learn more and stay updated about our latest uploads, please register on our website here: bit.ly/DontMemoriseRegister
Don't Memorise, Know More :)
Wasim Baig simp
@@shitpostgod2656 15 year olds calling everyone simps
No hablo ingles pero entendi todo a la perfeccion. El lenguaje matematico es universal..
Es verdad
I guess it's something like "no English is needed here. The Maths language is universal". Am I right?
The translation is: “I don’t speak English, but I understood everything perfectly. The language of mathematics is universal.”
Yo entiendo inglés pero no entendí una mierda.
Naj es broma, sí entendí.
@@kasra72389 you are right
Better than any other math video,well explained,I was quite afraid for my exam as this question was for 4 marks...Thank you for sharing such a great video
I wish i could get this kind of education before... but no problem i am here now and enjoying these leactures. Thank you sooo much.
Wow , this is an awesome way of analyzing a concept.
This is far better than the environment in which we were taught , thanks a lot .
Don't memorize stood by it's name, we are really learning in a way we don't have memorize
Very very very very very very very very 10000000000000000000000000 times very nice explaination it was mindblowing
Thank you! Best concise explanation online.
I thanks this youtube channels from my heart because it helps me to understand maths easily and make easier to solve thanks dont memorise,
Thank you so much Surya for your appreciation. This motivates us to do better. Do support us by subscribing to our channel👍👍
This is the best explanation of this topic in my life
Non Euclidean geometries:
I'm going to end this mans whole career.
😭😭😭😭 I’ve researched non Euclidean geometry on my own and I’m not happy to do it in college haha
Thanks for your help 😎
You are most welcome, Hemanth!
We are happy to help😊
Perfect explanation! 27 students liked looking that. :)
Superb explanation. Who are watching this in 2019 .
Watching all of your videos from oldest to newest. This will take a few days; but should give me a very strong understanding of many areas of study.
Thanks Very much I am now prepared for test
This video cleared my doubts.Thank you😊
Thank you for helping me!💗
very perfect thank god its very useful for my math exam 😃😃😃😃
Clear as water... Great explanation
Great voice with a spectacular way of teaching. Understood the concept under 2 min. Thanks alot .
Great! Simple! Worthy! :)
Thank u fr the explanation u r teaching is mind blowing
Lots of thanks to u ... ❤️ u clear all my doubts 🙏🏻
Thank you do look much for putting this video.Because since I was a little bit confused,I went to RUclips and search this 😁
Thanks once again.You're the best😘❤❤❤
This channel is actually so effective thank you
Most welcome, Axstro! Gald our videos are helpful to you 😃
Really amazing channel small things are really neglected in education system but u people are even explaining from basics really great please do lot of videos
Thank you very much this is going to help me so much on my exam
Thanks to make it easy.
Thank you
Very nice Video Tomorrow is my exam And I am really well prepared for it and confident 😎 by watching your video
Awesome learning channel..
Wow!...that's was great....you are my another new teacher from now!
Absolutely 👌👌👌 Great video.This video cleared my doubt .keep it up.
And I love these 2 words
"Don't Memorise"
Beautiful Indian accent! Clear!
Boom! u clear my concept
Thankyou so much for your explanation
This 3 min video saved my 5 Marks
this channel is greatest chanel am subscribe
this channel
am prepare for upsc but is very usefull 2 minutes to clear basic
Great no words just Bravo Bravo Bravo bravo bravo bravo bravo bravo bravo
Watching at 2024😂
Good one buddy😂
Your mother
Real
Is this the new minecraft enchantment table accent?
XD
Lol
Lol😹😹😹😹
Wow very nice topic
ery nice maam i am a new student i love your videos as i've started in lock down as my teacher had sent the link i 'm very happy maam please continue like this only thank you maam
Thank you I so happy .because I got the ans of my question. Thank you, thank you, thank you . 😊😊
Nice! This explanation is just Amazing 😆
I understood everything 😁
Thak uhh soo much :)
Thank you so much ✨🙏
Thank u so much this helped me alot in my homework
Thank you very much
this explanation Is mind blowing thank you so much
Alternate which is even faster to prove is that, all triangles can be formed by cutting a quadrilateral in half across the diagonal. And since quadrilaterals are always 360 degrees, cutting the quadrilateral in half splits 2 of the corner angles in half to make a triangle every time. The two triangles formed have exactly 360/2 = 180 degrees
😮 thx man
being a surveyor i know that the sum of interior angles = 180(n-2) n being the number of amgles. this works for any shape and number of angles as long as the figure is closed. this is how one determines the ‘error of closure’ in a surveyed figure.
It is simple on exam perfect angles 👌
A proof I learnt in high school was cut out a paper triangle and fold it so one corner is resting on the opposite side. You'll find that the other two corners can be folded in to meet that first corner so that all three corners together form the sum of the angles on a straight line, which of course is 180 degrees.
this could be taking notes but thank you so much I really need help with math 😃😉
Thank you very much...clear, concise, and complete, short of explaining why it might be the most important topic in Geometry. I actually did quite well in Geometry in High School but I'm afraid that was many years ago. Although I could remember that the sum of the angles of a triangle equaled 180 degrees, I could not for the life of me remember why, which is always the most important aspect of learning anything. That five year old may be able to answer correctly for more topics immediate in their life, but I really don't think they're smarter than me... well, not all of them anyway.
Thank you very much for the appreciation and for watching.
To view more videos for free, register on our website: bit.ly/DontMemoriseRegister :)
No
Amazing job.superb experience
I really loved your explanation of Binomial theorem!
Nicely done. Very clear and easy to follow.
One of my childhood mystery get cleared today
Thanks
Hi
A high quality video thank you very much
Thanks for this video 😇😇😇
Thank you, you’ve done a great work
Thank you for making this video! It's very helpful :)
It's my pleasure. We are really happy to hear that it was helpful to you. We are glad that you understood the concept. You motivate us to do better. Keep watching our videos. 😊😊
This thorem is very simple in exam time
AMAZZZZING !!!!!! THANKYOU SO SO MUCH IT HELPED ME A LOTTTT !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
You're most welcome and Thanks for your appreciation. We are really happy to hear that it was helpful to you. We are glad that you understood the concept. Do support us by subscribing to our channel. 👍👍
Simple but powerful
Thank you.
For those who are unsatisfied, a quick Google search should show you the proof of the Alternate Interior Angles Theorem.
It is conventional in math to use previously proven theorems to prove others.
Very nice, concise, clear proof.
Thank you. :)
Thank you so much.... I really was in need for it
Only 10k views?? This video is brilliant you deserve way more than this. Promote promote promote!
Thanks Rohit :)
Really like
Mam u explained very nice
Can u make more videos on axioms and postulates
275K Now
Well its kind of a "no shit sherlock" video
I knew it but not sure about it
Thanks
Thank u so much mam I clarified my all doubts
Best. Explanation
THANKS DM
Nicely explained.... thank you very much
good one.
Good n clear explanation... It's Very useful
I wish i would be your student in real.......i would be a maths genius.....love from india......
Thaanks a lot!!. This is helping me pass my Half yearly examination!!! Cheers!!!! :) :)
That's awesome! Don't forget to register on our website here: bit.ly/DontMemoriseRegister
It has more awesome videos :)
#DontMemorise
I will see :)
Worth watching
Thanks a lot!
you are the world's best maths teacher
Thanks a lot, Pammi Kumari!
Keep watching! 🙂🙂
The number 180 is arbitrary. This number has been chosen because it can be divided by many numbers, so the results (partial angles, smaller angles) would be integers. That's why the angel of a straight line is 180. And as a result of this, the sum of the angles of a triangle is 180.
It can be also reversed: We can decide that the sum of the three angles is 180, then the angel of a straight line would be also 180. This is true only in Euclidic Geometry (Plain Geometry).
Water boil at 100 degrees. why? The answer is the same. It is also an arbitrary number just for convenience.
zohar99100 Not quite. It is not that 180° was chosen arbitrarily. Not at all. Rather, it is derived from the definition of the circle as being 360°, with the latter being arbitrary. However, this difference is important, because there is much more justification to start with 360° than to start with almost any other number.
THANK-YOU SO MUCH YOU SAVED MY LIFE
+jarin hawlader , awesome :)
U said very interesting and in very organized . I really liked these video
so satisfying holy thanks so much
You're most welcome. We are glad that you understood the concept. We are happy that we could help you learn. For more videos, please visit our website - dontmemorise.com/
Excellent videos...THANKSSSSS....
Finally found something useful
Thanks a lot😊
Keep making more of such videos.
Thanks,got a new concept.
Thanks i understood very clearly
You're most welcome. We are glad that you understood the concept. We are happy now that you are all clear with your doubts. You motivate us to do better. Keep watching our videos. 😊😊
wow thanku so much
Thanks for clearing my doubts
Thank you sir very so much confused than clear ho gya
I loved ur explanation
Interesting, no one explain this; thanks