Question

In an isosceles ∆ ABC if vertex angle ∠ = ° ∠ = A then B 80 ,

Answer 1

Step-by-step explanation:

In a isosceles ∆ ABC if vertex angle ∠ = A, ∠ =B 80° then :

angle a and angle b take it as x then form 2x

180/2x then x = 90°

then ∠ = A= 90 degree

∠ =C=90 degree