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Heptagon facts for kids

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A heptagon

A heptagon or septagon or 7-gon is a shape with 7 sides and 7 corners.

Regular heptagon

All sides of a regular heptagon are the same length. Each corner is 147.27°. All corners added together equal 6840°.


The amount of space a regular heptagon takes up is

A = \frac{7}{4}a^2 \cot \frac{\pi}{7} \simeq 3.634 a^2.

a is the length of one of its sides.

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