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Description
A seven-sided polygon, also called a septagon.
Properties
Vertices:
7
Edges:
7
Angles:
7 angles (sum = 900°)
Interior:
128.57°
Symmetry:
7
Diagonals:
14
Real Life Examples 🌍
Examples: UK coins (50 pence, 20 pence), decorative designs, symbolic purposes
Explanation: Heptagons are harder to make precise without technology and less practical for stacking or tiling compared to triangles, squares, and hexagons.
Why used: Mostly used in design, decoration, or symbolic purposes.
Fun Facts 🎉
- • UK 50 pence and 20 pence coins are heptagons
- • Has 7 lines of symmetry when regular
- • Used in some architectural designs