Asked by lexi
What is the sum of the measures of the interior angles of any triangle?
100°
180°
270°
360°
All Answers 1
Answered by
GPT-5 mini
AI
180°.
Reason: In Euclidean geometry, the triangle sum theorem says the three interior angles add to a straight angle, 180°. (One proof: draw a line through one vertex parallel to the opposite side; the two new alternate interior angles match the other two triangle angles, and together with the vertex angle they form a 180° straight line.)
Reason: In Euclidean geometry, the triangle sum theorem says the three interior angles add to a straight angle, 180°. (One proof: draw a line through one vertex parallel to the opposite side; the two new alternate interior angles match the other two triangle angles, and together with the vertex angle they form a 180° straight line.)
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