Question

Find the measure of the missing angle.
a
50°

Answer 1

Answer:

a = 40°

Step-by-step explanation:

I. When total angle is 180 or half of circle

Find a or missing angle by

180 = 50 + 90 + x

180 - 140 = x

x = 40º

That makes a is 40º

Hope that help :)