A regular polygon 100 (hectogon) has precisely 100 sides, 100 vertices, and 4,850 diagonals. Its area formula is A = 25s² × cot(π/100) ≈ 795.51s², where s is the side length. The sum of its interior angles equals 17,640°, while each central angle is exactly 3.6°.

Geometry Guide
What Is a Polygon 100?
Geometry Guide
Hectogon Properties & Formulas
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Polygon Names 1 to 100 – Complete List
Geometry Guide
100-Sided Polygon Image – What Does It Look Like?