# Quadrilateral

**Quadrilateral** is a type of polygon with four sides.

**Sum of all interior angles:** Sum of all interior angles of a quadrilateral is 360°.

**Types of quadrilaterals and their properties:**

Quadrilateral |
Properties |

A quadrilateral with each pair of opposite sides equal. |
(1) Opposite sides are equal. (2) Opposite angels are equal. (3) Diagonals bisect one another. |

A parallelogram with sides of equal length. |
(1) All the properties of a parallelogram. (2) Diagonals are perpendicular to each other. |

A parallelogram with a right angle. |
(1) All the properties of a parallelogram. (2) Each of the angles is a right angle. (3) Diagonals are equal. |

A rectangle with sides of equal length. |
All the properties of a parallelogram, rhombus and a rectangle. |

A quadrilateral with exactly two pairs of equal consecutive sides. |
(1) The diagonals are perpendicular to one another. (2) One of the diagonals bisects the other. (3) In the figure |