Question

triangle Abc is an isosceles triangle with AB=AC if angle B =40 degree find angle A abd C​

Answer 1

Answer:

Step-by-step explanation:

AB=AC

∠B=40

So,∠C=40(opposite sides are equal so the opposite angles are also equal )

the sum of all the angles of the triangle is 180°

∠A+∠B+∠C=180°

∠A+40+40=180°

∠A=180-80

∠A=100