Parallelogram

• The diagonals of a parallelogram bisect at right angles.
• Properties of Parallelograms
• Parallelogram - Opposite sides are equal and parallel; opposite angles are equal
• Quadrilaterals are classified according to the number of parallel sides they have, as well as their interior angles.
• Square – All sides are equal and all angles are right angles.
• Rectangle – All sides are equal and all angles are right angles.
• Rhombus - Four sides of equal length but not necessarily perpendicular to one another
• A quadrilateral is any four-sided polygon with four edges (or sides) and four vertices or corners.
• Square - Four congruent (equal) sides with all interior angles measuring 90 degrees
• Rectangle - All four sides have the same length, all interior angles measure 90 degrees
• Rectangle – Two pairs of adjacent sides are equal and two pairs of adjacent angles are right angles.
• Rhombus – All sides are equal but not necessarily congruent with any angle.
• Trapezoid/trapezium – One pair of parallel sides and two non-parallel sides.
• Trapezoid/trapezium - One pair of parallel sides and two non-parallel sides
• Trapezoid (trapezium) – One pair of non-parallel sides is unequal while the other pair is equal and parallel.
• Kite – Two pairs of adjacent sides that are different lengths and two pairs of adjacent sides that are equal length.
• Kite - Two pairs of adjacent sides that are different lengths and form an obtuse angle at the vertex where these sides meet
• Trapezoid/trapezium - One pair of parallel sides
• Kite - Two pairs of adjacent sides that form congruent non-right angles
• Regular Polygons - Regular polygons are polygons where all sides are equal in length and all internal angles are equal in measure.
• Regular polygon - A polygon with congruent sides and congruent angles
• Rectangle - Two pairs of adjacent sides that are congruent and opposite sides that are also congruent; all interior angles measure 90 degrees
• Parallelogram - Opposite sides are congruent and parallel; diagonals bisect at right angle
• Parallelogram – Opposite sides are parallel and equal in length; opposite angles are equal.
• Quadrilateral – Four sides that form a closed figure
• Quadrilaterals can be classified as convex if their diagonals do not intersect inside the figure.
• Quadrilaterals can be classified as convex if their diagonals do not intersect inside the figure.
• Kite – Has no parallel sides, has two sets of adjacent sides that are equal in length, and its diagonals bisect each other at right angles.
• Kite - Has no parallel sides and has exactly one axis of symmetry
• Trapezoid – One pair of parallel sides and nonparallel bases that intersect at an obtuse angle.
• Trapezoid - One pair of nonparallel bases and two legs connecting them; no special properties regarding base lengths or angles
• Trapezoid - One pair of parallel sides and nonparallel bases