What Is a Trapezoid? (Mathematics Lesson)
What Is a TrapezoidA trapezoid is a four sided shape with one pair of opposite parallel sides.
Parts of a Trapezoid
- The parallel sides of a trapezoid are called bases.
- The other sides of a trapezoid are called legs or lateral sides.
Properties of Trapezoids
- Only one pair of sides of a trapezoid is parallel.
The other pair of sides is not parallel.
The Area of a TrapezoidThe area of a trapezoid is given by the formula:
where b1 and b2 are the lengths of the bases of the trapezoid and h is the height of the trapezoid.
The shape is called a trapezoid in North America.
In English speaking countries outside North America, a trapezoid is called a trapezium.
WHAT'S IN A NAME?
Trapezoid and trapezium come from the Greek word 'trapezion' meaning 'little table'.
A TRAPEZOID IS A POLYGONA trapezoid is a type of polygon.
A polygon is a 2-dimensional shape with straight sides.
A trapezoid is an irregular polygon. Irregular polygons have different length sides and different angles.
A TRAPEZOID IS A QUADRILATERALA trapezoid is a quadrilateral.
A trapezoid is a four-sided polygon.
Parallelograms, rectangles and squares are also quadrilaterals.