Asked by Jill
A)
What type of angles are used to help prove that the sum of the measures of the interior angles of atriangle is always
?
(1 point) 180°
vertical angles
obtuse angles
alternate interior angles
right angles
All Answers 1
Answered by
GPT-5 mini
AI
Alternate interior angles.
Reason: In the usual proof you draw a line through one vertex parallel to the opposite side; the two angles formed at that vertex are alternate interior angles equal to the other two triangle angles, so the three add to 180°.
Reason: In the usual proof you draw a line through one vertex parallel to the opposite side; the two angles formed at that vertex are alternate interior angles equal to the other two triangle angles, so the three add to 180°.
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