a triangle has 0 diagnols
A hectagon has 9 lines of symmetry!
i dont know, find a hectagon and count the sides trololo
A hectagon has 100 sides. It might be confused with a heptagon which has 7 sides.
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A hectagon (or hectogon) is a Polygon with 100 angles.A heptagon has 7, and a hexagon has 6.
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8 vertices
None
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