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A quadrilateral is a four- sided polygon with four angles.

• Four sides.
• Four vertices
• The interior add upto 360 degrees. The five most common types of quadrilaterals are: ## Rectangle

A quadrilateral with four 90-degree angles. Also opposite sides are parallel and of equal length. ## Parallelogram

A quadrilateral with opposite sides parallel. Also opposite angles are equal. ## Square

A quadrilateral with four equal sides and four 90 degree angles. Also opposite sides are parallel. ## Rhombus

A parallelogram with four equal sides. Also opposite sides are parallel and opposite angles are equal. ## Trapezoid

A quadrilateral that has exactly two sides parallel. ## Kite

It has two pairs of sides. Each pair is made up of adjacent sides that are equal in length. The angles are equal where the pairs meet. Summary
• A quadrilateral is a four- sided polygon with four angles.
• Four sides.
• Four vertices
• The interior add upto 360 degrees.
• The five most common types of quadrilaterals are:
• Rectangle: A quadrilateral with four 90-degree angles. Also opposite sides are parallel and of equal length.
• Parallelogram: A quadrilateral with opposite sides parallel. also opposite angles are equal.
• Square: A quadrilateral with four equal sides and four 90 degree angles. Also opposite sides are parallel.
• Rhombus: A parallelogram with four equal sides. Also opposite sides are parallel and opposite angles are equal.
• Trapezoid: A quadrilateral that has exactly two sides parallel.
• Kite: It has two pairs of sides. Each pair is made up of adjacent sides that are equal in length. The angles are equal where the pairs meet.
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