Which polygon has exactly eight sides and eight interior angles?

Study for the TABE Math Test. Practice with flashcards and multiple-choice questions, each question offers hints and explanations. Get ready for your exam!

Multiple Choice

Which polygon has exactly eight sides and eight interior angles?

Explanation:
The main idea is that a polygon has as many interior angles as it has sides. So an eight-sided polygon must have eight interior angles. The shape with eight sides is called an octagon, and octo- means eight while -gon refers to angles or corners. If you want a quick check, the total of the interior angles for an eight-sided polygon is (8−2)×180 = 1080 degrees, which distributes into eight angles. That matches having eight corners, so the correct description is an octagon. The other names correspond to shapes with seven, nine, or ten sides, which is why they don’t fit.

The main idea is that a polygon has as many interior angles as it has sides. So an eight-sided polygon must have eight interior angles. The shape with eight sides is called an octagon, and octo- means eight while -gon refers to angles or corners. If you want a quick check, the total of the interior angles for an eight-sided polygon is (8−2)×180 = 1080 degrees, which distributes into eight angles. That matches having eight corners, so the correct description is an octagon. The other names correspond to shapes with seven, nine, or ten sides, which is why they don’t fit.

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