Quadrilateral Four-sided figure that may or may not have a
parallel sides
Trapezoid One pair of parallel sides
Isosceles Trapezoid One pair of parallel sides
Base angles are congruent
Congruent legs
Congruent diagonals
Parallelogram Two pairs of parallel sides
Opposite sides are congruent
Opposite angles are congruent
Adjacent angles are supplementary
Diagonals bisect each other
Rectangle Two pairs of parallel sides
Opposite sides are congruent
All angles are congruent
Adjacent angles are supplementary
Diagonals bisect each other
Diagonals are congruent
Rhombus Two pairs of parallel sides
All sides are congruent
Opposite angles are congruent
Adjacent angles are supplementary
Diagonals bisect each other
Diagonals bisect the angle of a rhombus
Diagonals form perpendicular lines
Square Two pairs of parallel sides
All sides are congruent
All angles are congruent
Adjacent angles are supplementary
Diagonals bisect each other
Diagonals are congruent
Diagonals bisect the angle of a square
Diagonals form perpendicular lines
501 Geometry Questions