quadrilateral Synonyms

quadrangle tetragon four-sided figure four-sided tetradic squarer triangle tetragonal square solid sapwood tetrahedral right-angled rhombus quartic quartile quaternary rectangle rectangular rhomb rhombic rhombohedric rhomboid rhomboidal tetrahedron tetravalent 4th boxy multifaceted quadrumvirate six-sided 4-gon four-sided polygon foursome triquetrous three-sided trapezium trapezohedral trapezoid trapezoidal triangular triclinic trihedral trilateral bilateral fourgon foursquare fourthly hexagon icosahedral