How to Construct a Triangle whose perimeter and base angles are given

[@adarshshandil8349]

pls tell me the steps of construction along with justification.it will be a great help. by the way,thank you.it was very helpful

[@aaronfernandes9716]

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[@shalinisharma7764]

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This vedio are to helpful

[@thebbldidntwork8210]

,

[@lathagb2088]

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[@PrahladSingh-yc9zn]

Thanku it really helped me

[@kishanthakur3127]

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[@zayedkhan911]

Thank you sir it helped me a lot

[@mastitime9458]

Sir is explaining perfectly

[@KatherineRogers]

Justification
Draw a triangle ABC as though you solved this.
Now along the baseline draw PB = AB and CQ = AC
Notice angle ABC is external to triangle APB.
Angle ABC is then equal to the sum of the two remote angles ie angle APB + angle PAB
PB=AB so this triangle is isosceles. These two angles then are equal to each other.
They are equal to 1/2 angle ABC.
Handle the right hand side similarly.
So lets start over.
You have line PQ equal to the perimeter.
Draw angle APB = 1/2 desired angle B.
(He does this by drawing in the entire angle B and then bisecting that).
Draw angle AQC = 1/2 desired angle C.
(Same reasoning as on the left. Angle C is external to triangle ACQ which is isosceles. AC=CQ, Base angles are equal. So angle ACQ = 1/2 ACB)
The line you drew at P meets the line through Q at point A.
So where...exactly on the baseline DO YOU put point B?
If you draw a perpendicular bisector to line PA, you have these 2 line segments formed from PA as congruent, the 90 degree angles congruent, and the shared perpendicular line congruent. By SAS the two triangles formed are congruent.
Notice this makes line AB=BP so indicates where to put point B.
Angle PAB= Angle BPA as appropriate for an isosceles triangle. The sum of these two angles = the exterior angle ABC.
You have similar reasons on the Right Hand SIde for locating point C.

[@umagopal8958]

Hi brother..how can the perimeter of AB+CA+BC can be 11cm...
To construct a triangle given its perimeter and its 2 base angles.
Given the base angles , say angle B and angle C and BC+CA+AB , you have to construct the triangle ABC. In this way the question is in my textbook....pls answer me....

[@anonymousperson1135]

wow

[@aurobindoghosh8084]

This video is also very helpful. Thank you Sir

[@shankarmatthod8866]

Thank you sir, it helped a lot for my son, thank you so much....your explanation is good 😍😎

[@celeste.octopus1930]

thank you so much...I was confused at the bisector part but now it's all clear...

[@anonymousperson1135]

very well explained sir , useful for my 9th finals , thanks a lot sir , musch appreciated , I hope I get math teacher like you

[@shinisreerangan1869]

Nice it helped me thanku. Hoping for more

[@monikakalra8882]

Thanks sir .ur explanation is awesome

[@arunkumarmogha5456]

Very wonderful thanks sir

[@scienceapps1467]

excellent sir

[@Foundation4iit]

Thanks and welcome

[@aezutube]

You explained so well,sir
Thanks

[@atozmusic5256]

Thanks Sir helped a lot..
Amazing Explanation...
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[@sailendrasarmah6412]

Sir you re xcellent. I thank u very much. After watching this video I got it how to do. Everybody will be helped by this video if watched

[@piyushiagarwal3615]

Superb
Wonderfull
Very helpful

[@shreshthapandey4765]

Very well explained

[@ashwiniupadhayay7049]

Nice video

[@subhashreebarik2137]

Thank you sir .It helps me a lot.

[@kushala1401]

Your explanation is super 👌👌

[@ChichiChikondi]

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[@omprakashsinha41]

Thanks aapka teaching ka tarika bahut acha hai

[@shaikabdulla9427]

Nice very helpful for me thanks

[@quandaledinglebinglebottom2264]

Nice English sir😍

[@shalinisharma7764]

Helpful vedio for me sir Thank you very much sir

[@hemantsharma1205]

Thanks thank you sir😊😊

[@shahidmangulli5498]

Nice teaching methods sir I like it❤️👍👍🙏

[@Foundation4iit]

Thanks and welcome

[@ajagannaonemanarmy5401]

Super
By this in our class iam only one who done this home work

[@LovepreetSingh-ys5kz]

Great Sir

[@preranamath6982]

Thanks a lot sir it helped a lot for my 9th maths final exam

[@satyajeetbarik1167]

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[@rayyanmohammed1425]

I love you ummm
thankyou for teaching me so much

[@jayantpal9346]

Thank you so much sir😊😊😊

[@anithajaindarpan2508]

JAYANT PAL hi

[@Phoenix-kq2eh]

Worderful

[@asmazulfikar1617]

Can u help me out with constructing a triangle, given the base, one side and one angle. Thank u

[@wahidhussain4346]

thnx a lot
😃😃😊

[@smarthbajaj378]

Thanx Sir helped alot🙏🙏🙏🙏

[@ShivaShiva-lu8lx]

Thank you

[@kanishadhulapkar5493]

Sir say aloud I can't hear you voice

[@pratyushkothari2244]

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[@SangitaKumari-cf4tl]

Good job

[@smitabansal8366]

Why to do angular bisector

[@falakkhan488]

Tysm sir👍

[@AbhaySingh-wj2my]

I like your compass

[@manjegowda3398]

Tq sir 👍👍👍

[@somashekarkr1944]

Thank you sir

[@shreyakarike5061]

Improve your english sir

[@jyothisurabhi8676]

thank you very much sir

[@jyothiks3093]

Sir can u pl . teach us if dift angles like 65 and 85 degrees are given

[@Foundation4iit]

then you can use protractor

[@jyothiks3093]

Oh...tq very much sir

[@techtomorrow7135]

Thanks sirr

[@sadiqpasha9078]

Tq soo much sir

[@bbayesha7096]

Thank u soi

[@dabugaur7295]

Sir what is the perimeter of 15 cm

[@AnshuKumari-li1yw]

thanks

[@AbdulAli-yt1mn]

thanx thakala

[@HemanthKumar-kn5jk]

Thankyou very much sir

[@umagopal8958]

Hi Sir....how can the perimeter of AB+BC+CA can be 11cm ....
To construct a triangle given its perimeter and its 2 base angles.
Given the base angles , say angle B and angle C and BC+CA+AB , you have to construct the triangle ABC. In this way the question is in my textbook....pls answer me if anyone know the answer....

[@anubhavtv9466]

Thnx sir is video ne mujhe exam me bahot help ki h thanku sir😊😊😊

[@mrudhravenu474]

Thank u sir

[@annanyagairola2964]

where is the justification?

[@shaazshaaz3897]

tank you sir

[@shalinibhaskar3684]

Thank u

[@Darkstory-s1b]

Nice

[@shyamuverma4766]

Thanks sir

[@kushala1401]

Can u say in kannada only for this video please 🙏

[@mmwguddu]

Can u pls explain in your mother tongue . Actually I am not able to understand your English.

[@ufgamer4505]

Sir your volume is very slow

[@masihafathima49]

How to contruct 110

[@Dream-iy1xc]

Sir , why are you changing the radius of compass ? For 3.2 cm you are taking more than 8 cm radius because ur arc won’t intersect in the extended line . Then what is the purpose of this video if your diagram is not accurate . You are explaining well but you are trying to cover up mistakes in your drawing .. this is just my feedback sir . Next time please don’t change the radius of compass .

[@umagopal8958]

How can the perimeter of AB+CA+BC can be 11 cm....
To construct a triangle given its perimeter and its 2 base angles.
Given the base angles , say angle B and angle C and BC+CA+AB , you have to construct the triangle ABC. In this way the question is in my textbook.... pls answer me if anyone know the answer....

[@vijithshankar8883]

Tysm sir

[@akshathadevaraj4199]

Tq sir

[@karthiksdmenglishmediumhig181]

Super bro thank you

[@vaishnavigobbur8267]

show a c=45° b =60° sir

[@karthikreddy1883]

👌

[@shobinia.n.4062]

Tq

[@shrihari154]

tankyou

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[@MAHAANLEE]

It helps a lot for my exams thank u so much

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[@scienceapps1467]

pls reply maths exam tommorow give me best wishes

[@Foundation4iit]

All the best

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[@RanveerDadwalF]

thanks sir it helped alot

[@Foundation4iit]

Glad to hear that

[@classicg.g1265]

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[@gattigovindavarma4698]

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[@chitraknaikchitranaik6993]

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[@romangamar1298]

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[@somashekarshankar9251]

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[@ganapathimoger6684]

Thank you sir