Question

Use the image to answer the question.



An illustration shows a right triangle. The right angle is at the left; the top angle is labeled a; and the angle on the right is labeled b. A line extending outward from angle a forms an exterior angle of 142 degrees.
Use the properties of exterior angles of triangles to find angle b
.

(1 point)
Responses

92°
92 degrees

52°
52 degrees

232°
232 degrees

38°
38 degrees
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Answer 1

The exterior angle equals the sum of the two remote interior angles. So 142° = 90° + b ⟹ b = 142° − 90° = 52°.