heptagonal
Related Words
heptagonpolygongeometryanglevertexsideedgeperimeterareasymmetryregularirregularconvexconcaveinterior angleexterior anglesumdegreeradiantrianglequadrilateralpentagonhexagonoctagonnonagondecagonhendecagondodecagonpolyhedronprismpyramidtessellationtilingEuclideanplanecoordinateaxisvectortrigonometrysinecosinetangentapothemdiagonalcircumcircleincircleradiusdiameterchordarccircumferenceshapefigureformdimensionlengthwidthheightvolumesurface areamathematicscalculationprooftheoremaxiomprotractorcompassrulersketchdiagramblueprintarchitecturecrystallatticesymmetry group