Sum of Interior Angles of a Triangle Answers

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Which statement is true about angle C?

A
The angle is acute.
B
The angle does not make a straight line with the other two.
C
The angle is obtuse.
D
The angle is a right angle.
2
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Sample Response: The sum of the measures of the interior angles of a triangle is 180°. m∠B + 50 + 65 = 180, so m∠B = 65°. The sum of adjacent angles forming a straight line is also 180°. m∠2 + 50 + 65 =180, so m∠2 = 65°. The angles are congruent. Check all that you included in your response.Interior angles add up to 180°, so mB = 65°.Straight lines add up to to 180°, so m2 = 65°.2 and B are congruent.

A
Interior angles add up to 180°, so mB = 65°.
B
Straight lines add up to to 180°, so m2 = 65°.
C
2 and B are congruent.

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