hypotrochoid
polygonar
subtriangular
gridpoint
geometrally
dimension
circumscriptable
intersection
polydrafter
polygonate
polygonial
coordinate axis
slant height
polygonically
Cartesian coordinate
geometrideous
conjugate angles
rotund
concave
trilinear
Plücker coordinate
hypergeometry
osculating circle
parallel
trifan
vandyke
circular angle
mesh
nine-point circle
oblique system of coordinates
reference grid
squarely
equitriangular
multifoil
three-cornered
translation
interlock
biarc
quadrantally
triangle
squircular
try square
beam compass
rhumb
plane sailing
polygonal chain