### Definitions Found:

# having four angles

- tetragonoushaving four angles
- squaresthaving four equal sides and four right angles
- tetragonpolygon having four angles or sides; quadrangle or quadrilateral
- quadrangularhaving four angles and four sides; having the shape of a quadrangle
- diamondfigure having four equal sides and two acute and two obtuse angles
- hypercubea figure in a space of four or more dimensions having all its sides equal and all its angles right angles
- hypercubesHYPERCUBE, a figure in a space of four or more dimensions having all its sides equal and all its angles right angles
- rectangleparallelogram with four right angles
- rectanglesparallelogram with four right angles
- squarerectangle with four equal sides and four right angles
- squaringrectangle with four equal sides and four right angles
- squarerrectangle with four equal sides and four right angles
- squaresrectangle with four equal sides and four right angles
- quadranglea plane figure with four angles (and therefore four sides)
- quadranglesQUADRANGLE, a plane figure with four angles (and therefore four sides)
- rhombusa parallelogram with four equal sides and sometimes one with no right angles
- rhombusesA parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides
- rectanglea four-sided plane figure with all its angles right angles, esp one with unequal adjacent sides
- rectanglesRECTANGLE, a four-sided plane figure with all its angles right angles, esp one with unequal adjacent sides
- diamondsA figure with four straight sides of equal length forming two opposite acute angles and two opposite obtuse angles; a rhombus
- angularhaving angles
- hexangularhaving six angles
- heptangularhaving seven angles
- octanglehaving eight angles
- octangularhaving eight angles
- equiangularhaving equal angles
- equiangularHaving equal angles
- multangularhaving many angles also MULTIANGULAR
- isogona polygon having equal angles
- heptagonalhaving seven angles or sides
- multiangularhaving many angles also MULTANGULAR
- isogonpolygon having all angles equal
- isogonspolygon having all angles equal
- octagonalhaving eight sides and eight angles
- hexagonalhaving six sides and six angles
- isogonichaving or pertaining to equal angles
- pentagonallyPENTAGONAL, having five corners or angles
- gonsfigure having (so many) angles decagon
- isogonsISOGON, a polygon having equal angles
- enneagonalbelonging to an enneagon; having nine angles