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Mewn geometreg, mae heptagon yn bolygon sydd â saith ochr a saith ongl.
Heptagon Rheolaidd | |
---|---|
Heptagon Rheolaidd | |
Ymylon a fertigau | 7 |
Symbol Schläfli | {7} |
Diagram Coxeter–Dynkin | |
Grŵp cymesuredd | Deuhedrol (D7) |
Arwynebedd (gyda t=hyd yr ymyl) | |
Ongl mewnol (gradd) | 128.5714286° |
Polygonau |
Triongl | Pedrochr | Pentagon | Hecsagon | Heptagon | Octagon | Nonagon | Decagon | Hendecagon | Dodecagon | Triskaidecagon | Tetradecagon | Pentadecagon | Hexadecagon | Heptadecagon | Octadecagon | Enneadecagon | Icosagon | Chiliagon | Myriagon |
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