Understand the meaning of parallel sides in geometry. Discover the properties of parallel sides and explore some examples of geometrical shapes...

Learn to describe parallel sides and shapes with parallel lines. Discover how many parallel sides a square or rectangle has. See examples of parallel shapes.

Learn about shapes with parallel sides in this engaging video lesson. Explore clear examples, and test your understanding with an optional quiz for practice.

Learn about parallel sides with our engaging video lesson! Understand the definition, shapes, and properties, including an optional quiz for practice.

Learn what a quadrilateral is and what does a quadrilateral look like. Understand the quadrilateral hierarchy and the types of quadrilateral shapes in it.

What does a trapezoid look like? This lesson explores the trapezoid definition, various types of trapezoids and the attributes of a trapezoid.

What is a parallelogram? Learn the definition of the parallelogram shape in geometry. Read about the properties of parallelograms and see examples.

A quadrilateral with two pairs of parallel sides, for example, is usually called a parallelogram. Therefore, by definition, a parallelogram has the characteristics of a trapezoid.

Learn about rhombus sides, angles, and other characteristics of this shape. Learn about the opposite angle theorem and see proofs for different...

Rectangles are quadrilaterals that have four right angles and two pairs of parallel sides. Each pair of parallel sides of a rectangle shape is equal. Other properties of rectangle shapes are: