Question

Fine the measure of a.
A.37
B.39
C.60
D.62

Answer 1

the sum of angles of triangle is 180 so;
a = 180 - ( 62 + 81 ) = 37°

Answer 2

Explanation:

Step 1: Find the angle a

All triangles add up to 180 degrees

81 + 62 + a = 180

143 + a = 180

a = 180 - 143

a = 37

Answer: Option A, 37