Question

find the Vertical angle of isosceless triangle is the 100.find base angle




full solution ​

Answer 1

QUESTION⤵️

find the Vertical angle of isosceless triangle is the 100.find base angle

ANSWER⤵️

Let ΔABC be an isosceles triangle with vertical angle ∠A=100°

and AB=AC.

Then, AB=AC⇒∠B=∠C

But, ∠A+∠B+∠C=180°

∴

100° +2∠B=180°

⇒∠B=40°

$\huge\star\mathcal\pink{hope \: it \: helps}\star$