Question

In congruent triangles abc and def, angle a = angle e= 40degrees and angle f = 65 degrees, then angle b =?

Answer 1

Angle a = Angle e = 40°

So Triangle abc congruent to Triangle efd

So Angle a = Angle e

and Angle b = Angle f

and Angle c = Angle d

Angle f = 65° = Angle b

So Angle b = 65°