SOLUTION: 10. Two angles of a triangle have measures of 45° and 75°. Which of the following could not be a measure of an exterior angle of the triangle?
60°
105°
135°
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Question 596355: 10. Two angles of a triangle have measures of 45° and 75°. Which of the following could not be a measure of an exterior angle of the triangle?
60°
105°
135°
120°
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
10. Two angles of a triangle have measures of 45° and 75°. Which of the following could not be a measure of an exterior angle of the triangle?
60°
105°
135°
120°
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Find the 3rd angle.
Then subtract each of the 3 angles from 180 to find the exterior angles.
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