general/types-of-quadrilaterals

Quadrilateral with sides of equal length

Trapezoid whose sides are all tangent to the same circle

Geometric shape

Trapezoid symmetrical about an axis

Rhombus with diagonals in the golden ratio

Symmetrical quadrilateral

Convex, 4-sided shape with an incircle and a circumcircle

Special quadrilateral whose diagonals intersect at right angles

Convex 4-sided polygon whose sidelines are all tangent to an outside circle

Quadrilateral with two pairs of parallel sides

Polygon whose four sides all touch a circle

Quadrilateral with four right angles

Quadrilateral whose vertices lie on a circle

Polygon with four crossed edges of two lengths