The sum of the measures of the interior angles at vertex I and vertex J can be found by subtracting the measure of the exterior angle at vertex H from 180 degrees (since the sum of the measures of the interior and exterior angles at a vertex is always 180 degrees).
180 degrees - 38 degrees = 142 degrees
Therefore, the correct answer is 142°.
Use the image to answer the question.
An illustration shows triangle uppercase H uppercase I uppercase J. Uppercase H is the left vertex, uppercase I is the top vertex, and uppercase J is the right vertex. A line extending outward from uppercase H forms an exterior angle of 38 degrees.
What is the sum of the measures of the interior angles at vertex I and vertex J ?
(1 point)
Responses
52°
52 degrees
142°
142 degrees
128°
128 degrees
38°
38 degrees
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