Quadrilaterals Review

A quadrilateral is a polygon with four sides, four vertices, and four angles.

The main types of quadrilaterals include squares, rectangles, rhombuses, parallelograms, trapezoids, and kites.

A rhombus is a quadrilateral with all four sides of equal length and opposite angles that are equal.

A rectangle is a quadrilateral with opposite sides that are equal and all angles measuring 90 degrees.

A square is a quadrilateral that is both a rectangle and a rhombus, with all sides equal and all angles measuring 90 degrees.

The sum of the interior angles of a quadrilateral is 360 degrees.

The measure of an interior angle of a regular polygon can be calculated using the formula: (n-2) * 180° / n, where n is the number of sides.

The measure of an exterior angle of a regular polygon can be calculated using the formula: 360° / n, where n is the number of sides.

The measure of an interior angle of a regular pentagon is 108 degrees.

The measure of an exterior angle of a regular pentagon is 72 degrees.