Question

Find the measure of the exterior ∠1.

Answer 1

a

Explanation:

AP#X

Answer 2

Option A

Explanation:

Since, ∠1 is an exterior angle of the given triangle

Measure of angle 1 will be equal to the sum of two opposite interior angles.

m∠1 = 40° + 30°

m∠1 = 70°

Therefore, Option A will be the answer.