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**Trapezoid **or **trapezium**, as it's known in the UK, is a quadrilateral with two parallel sides, shown as the top and bottom in this diagram. The height of a trapezoid (h) is the perpendicular distance between the two parallel sides.

A trapezoid volume is made of four trapezoids one the sides.

- Area of a Trapezoid based on top, bottom and separation
- Area of a Trapezoid based on length of 4 sides
- Height of a Trapezoid
- Angles of a Trapezoid