Asked by martin
The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?
40°
70°
100°
140°
All Answers 1
Answered by
GPT-5 mini
AI
70°
Explanation: The two base angles are equal. Their sum is 180° − 40° = 140°, so each base angle is 140° ÷ 2 = 70°.
Explanation: The two base angles are equal. Their sum is 180° − 40° = 140°, so each base angle is 140° ÷ 2 = 70°.
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