Question

Find the measure of Angle B and also give reason:

Answer 1

Answer:

answer = 89

Step-by-step explanation:

as sum exterior angle is equal to the sum of opposite interior angles

so,

150 = 61 + x

x = 150 - 61

x = 89

Answer 2

Answer:

Angle B = 89°

We know that a straight angle measures 180°.

So it's given that angle BCD = 150°

Angle BCA =180°-150°=30°

And the sum of all the angles in a triangle is 180°

61°+30°=91°

180°-91°=89°

HOPE IT HELPS YOU!