To find angle b, we can use the fact that the sum of the measures of the exterior angles of a triangle is always 360 degrees.
Since the exterior angle formed by extending line from angle a is 142 degrees, we can find angle b by subtracting 142 degrees from 360 degrees:
360 degrees - 142 degrees = 218 degrees
Therefore, angle b is 218 degrees.
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
52°
52 degrees
38°
38 degrees
232°
232 degrees
92°
1 answer