Answer:
x = 52
Step-by-step explanation:
Known:
What to find = x
Exterior angle = 142
Right angle = 90
Unknown:
what unknown value is = ?
Interior angle = ?
1. Find the angle of the interior angles.
180 - 142 = 38
2. Add the two known angles
38 + 90 = 128
3. Subtract from 180
180 - 128 = 52
x = 52 is the answer.
Hope this helped,
Kavitha Banarjee
