Quadrilaterals

Learn about rectangles, rhombi, and more!

See how their opposite angles are related!

This lesson will look at examples to explain geometric concepts.

This geometry lesson is about Quadrilaterals and the properties of these four sided Polygons.

This lesson demonstrates how to find the area of parallelograms and trapezoids.

This lesson will look at examples to give an explanation about Quadrilaterals in this short lesson.

A trapezium is a quadrilateral with no parallel sides. In this lesson we will be finding the trapezium.

In Euclidean plane geometry, a rectangle is any quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal. It can also be defined as a parallelogram containing a right angle. A rectangle with four sides of equal length is a square

This lesson will look at quadrilaterals and what qualifies an object as a quadrilateral.