How to find an angle in a hexagon - GRE Quantitative Reasoning

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Question

Quantitative Comparison

Quantity A: The degree measure of any angle in an equilateral triangle

Quantity B: The degree measure of any angle in a regular hexagon

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Answer

We know the three angles in a triangle add up to 180 degrees, and all three angles are 60 degrees in an equilateral triangle.

A hexagon has six sides, and we can use the formula degrees = (# of sides – 2) * 180. Then degrees = (6 – 2) * 180 = 720 degrees. Each angle is 720/6 = 120 degrees.

Quantity B is greater.

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