Question

Find the measure of the angle indicated.

A. 130°
B. 142°
C. 145°
D. 38°

Answer 1

• 142 = x

Explanation:

We know that:

• Triangle = 180°

Let's name the missing angle x.

• 73 + 69 + (180 - x) = 180
• => 142 + (180 - x) = 180
• => 322 - x = 180
• => 322 - 180 = x
• => 142 = x

Hence, the value of the missing angle is 142°.

Answer 2

Answer: 142°

Explanation:

∡BAC= 38°

∡BAN= 180°-38° = 142°