PHP error in Ad Inserter block 1  Block 1
Warning: Undefined variable $link
Chapter 8 Quadrilaterals

Angle Sum Property of a Quadrilateral

Types of Quadrilaterals

Properties of a Parallelogram

The MidPoint Theorem

Sum of the angles of a quadrilateral is 360^{o}

A diagonals of a parallelogram divides it into two congruent triangles.

In a parallelogram

diagonals bisect each other.

opposite angles are equal.

opposite sides are equal

Diagonals of a square bisects each other at right angles and are equal, and viceversa.

A line through the midpoint of a side of a triangle parallel to another side bisects the third side. (midpoint theorem)

The line through the mid points of sides of a D  to third side and half of it.

A quadrilateral is a parallelogram, if

its opposite angles are equal.

its opposite sides are equal.

its diagonals bisect each other.

a pair of opposite sides is equal and parallel.

Diagonals of a rectangle bisect each other and are equal and viceversa.

Diagonals of a rhombus bisect each other at right angles and viceversa.

A line through the midpoint of a side of a triangle parallel to another side bisects the third side.

The linesegment joining the midpoints of any two sides of a triangle is parallel to the third side and is half of it.