LEVEL ONE+CCSL

Quadrilateral __Definition:__ A polygon with four sides, and four angles, which has sum of 360 degree. __Facts:__ Four sides Four angles Sum of all interior angles is 360 degrees

Trapezoid __Definition__  A quadrilateral that has exactly one pair of parallel sides.  __Facts__ One pair of parallel sides When diagonal lines cut the parallel sides, alternate interior angles are congruent 

Rhombus __Definition__ A quadrilateral that has all four sides congruent. __Facts__ All sides are equal Opposite sides are parallel Opposite angles are congruent Diagonals form a perpendicular line

Rectangle __Definition__ A quadrilateral with four right angles.  Facts: All angles are right angles Opposite sides are congruent Adjacent sides are not congruent Diagonals are congruent Diagonals bisect each other

Kite

__Definition__ A quadrilateral with exactly two DISTINCT pairs of adjacent congruent sides. __Facts__ Diagonals form a perpendicular line Opposite sides are not congruent, but adjacent sides are. Angles in between the unequal sides are congruent

Square __Definition:__ A quadrilateral with four congruent parallel sides and four right angles. __Facts:__ All sides are equal All angles are right angles Diagonals are perpendicular bisectors Diagonals have equal lengths