undecagon Definition

hendecagon, regular polygon, polygon, concave polygon, quindecagon, interior angle, rhombicosidodecahedron, exterior angle, octangle, plane figure, right triangle, prismatoid, acute triangle, conic section, spherical angle, prismoid, central angle, obtuse triangle, enneagonal, disphenoid, trihedron, sexangular, scalene triangle, spheroconic, scalenohedron, sexangled, antiparallelogram, septangle, set square, tangent plane, euclidean space, tacnode, incentre, enneagon, plane angle, amblygon, hexangular, decahedral, orthocentre, ellipsoid of revolution, semiparabola, subtangent, decussative, rectangle, hexoctahedron, equilateral triangle, solid angle, heptangular, equilateral, radius of curvature, polar equation, angle of refraction, acnode, vertex, decahedron, parallelogram, centre of curvature, geometral, curvograph, brachydiagonal, triangle, binode, semimajor axis, brachypinacoid, regular polyhedron, sexangle, square matrix, orthodiagonal, quadrilateral, angulometer, demicircle, nephroid, subtense, semiaxis, bitangent, tetrahexahedron, major axis, minor axis, semitangent, macropinacoid, cofunction, clinodiagonal, trirhomboidal, isosceles triangle, catenoid, angulous, hypothenuse, bisectrix, radical axis, projective geometry, cartesian product, arcograph, main diagonal, enneahedron, geometrize, orthopinacoid, cathetus, latus rectum, pointel, latin square,