Question

In the following figure, find the measure of angle a. ​

Answer 1

Let the angle a be angle 1, angle 2

l || m and b is transversal

Angle 1 = 25° (Alternate angle)

m || n and c is transversal

Angle 2 + 155 = 180 (co-interior angles)

Angle 2 = 180 - 155

Angle 2 = 25°

Angle a = Angle 1 + Angle 2

Angle a = 25 +25

Angle a =50°

Answer 2

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