Practice Test

Question 4 • MASTER COURSE Geometry

Which diagram shows possible angle measures of a triangle?

Answer

Image with description A triangle has angles labeled 30 degrees at the lower-left vertex, 120 degrees at the top vertex, and 20 degrees at the lower-right vertex.

Image with description A triangle has angles labeled 35 degrees at the lower-left vertex, 120 degrees at the top vertex, and 35 degrees at the lower-right vertex.

Image with description A triangle has angles labeled 35 degrees at the lower-left vertex, 115 degrees at the top vertex, and 25 degrees at the lower-right vertex.

Image with description A triangle has angles labeled 32 degrees at the lower-left vertex, 115 degrees at the top vertex, and 33 degrees at the lower-right vertex.

Explanation

The interior angles of a triangle must add up to 180°. In choice C, 32° + 115° + 33° = 180°, so those measures are possible. The angles in choices A, B, and D do not add up to 180°.

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