ISEE Mathematics Achievement Question 199: Answer and Explanation
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Question: 199
5. In the equilateral triangle shown, what is the measure of each angle?
- A. 60°
- B. 90°
- C. 120°
- D. 140°
Correct Answer: A
Explanation:
A is correct. In an equilateral triangle, all three angles are equal. Since the sum of the angles in a triangle is 180°, each angle must be 180 ÷ 3 = 60°.