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Question
The Triangle Angle Sum Theorem states that the sum of the angles inside a triangle must equal 180°. Using this theorem, find the measure of angle C.

(2 points)
Responses

155°
155°

205°
205°

65°
65°

55°
55°
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1 answer

The correct answer is 55°.

Explanation: Since the sum of the angles inside a triangle equals 180°, and angles A and B are already given as 80° and 45° respectively, we can find angle C by subtracting the sum of angles A and B from 180°:

180° - (80° + 45°) = 55°

Therefore, angle C measures 55°.
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