Properties Of Triangles And Quadrilaterals -

A parallelogram that is both a rectangle and a rhombus.

A triangle is a three-sided polygon (3-gon) with three vertices. The most critical rule for any triangle is the , which states that the interior angles always add up to 180° . Classification by Sides properties of triangles and quadrilaterals

Two pairs of adjacent sides are equal. One pair of opposite angles is equal, and diagonals intersect at 90°. Part 3: Relationship Summary Table Parallelogram Opposite sides parallel All sides equal All angles 90° Diagonals are equal Diagonals perpendicular Why These Properties Matter A parallelogram that is both a rectangle and a rhombus

A parallelogram where all four sides are equal. Diagonals bisect each other at 90° (perpendicular). properties of triangles and quadrilaterals

A parallelogram with four right angles.