Question

if two angles of triangle are ewual one angle is 40 degree find the angle of the unknown angle​

Answer 1

Step-by-step explanation:

Let angles be A, B, C and let A and B be the equal angles.

Then,

Angle A = Angle B

So we can replace Angle B with Angle A

Angle C = 40° (Given)

A + B + C = 180° (Angle sum property)

A + A + 40° = 180° (Angle A = Angle B)

2A + 40° = 180°

2A = 140°

A = 140/2 => 70°

Therefore Angle A = Angle B = 70°

Keep Studying, All The Best!