polygon
triangular
truncated cube
construct
photostatically
superpose
lensoidal
shaped
square
regular icosahedron
triangularity
axis of symmetry
exterior angle
quadratic
external angle
presymplectic
conic
Riemann
circumconics
roughcast
cubangular
plane geometry
metageometric
conicohemispherical
Euclidian space
fractal geometry
planal
conic section
truncated tetrahedron
quadrangularly
conoid
Georg Friedrich Bernhard Riemann
Bernhard Riemann
topomorphological
regular tetrahedron
plane of symmetry
intercone
morphology
hypergeometry
cubiform
spherical trigonometry
geometric
primitive