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A triangle has angles measuring 15° and 45°. What is the measure of the third angle? A: 30° B: 90° C: 120° D: 180°
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A triangle has angles measuring 15° and 45°. What is the measure of the third angle?

A: 30°
B: 90°
C: 120°
D: 180°

User Dorvak
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1 Answer

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The answer would be C: 120° since all the angles in a triangle sum up to 180°... If we add 15° and 45° together, we get 60° and 180° - 60° = 120°
User GeeWhizBang
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