Question

(7) In A ABC, AB = BC = AC then LA = LB = LC =
A) 70°
B) 60°
C) 800
D)90°​

Answer 1

according to the questions:

ab=bc=ac

therefore, triangle ABC is equilateral triangle.

so,angle A=x

b=x,c=x

And ,angle A+angleB+angleC=180°[angle sum property]

x+x+x=180°

3x=180°

x=180/3=60°

hence, all Angles are 60°.