# Properties of a Trapezoid-Geometry Help-MooMooMath

Properties of a trapezoid
A trapezoid is a quadrilateral with one pair of parallel sides.
The parallel sides of a trapezoid create the bases.
The sum of the interior angles of a trapezoid equals 360 degrees, and the angles on each
side of the trapezoid are supplementary. A trapezoid has four vertices, also called
corners. The median of a trapezoid is a line that connects
the midpoint of the two legs. The formula for finding the median is to add
base 1 plus base two and divide by two, or the average
In addition there are right trapezoids and an isosceles trapezoid.
A right trapezoid has a right angle An isosceles trapezoid is a trapezoid with
two parallel sides, and the two other sides are congruent.
In addition the diagonals of an isosceles triangle are congruent.
The base angles of an isosceles trapezoid are congruent.
In the UK a trapezoid is called a trapezium The formula for finding area is 1/2 (base
1 + base @) times the height The formula for perimeter is base 1 + base
2 + side 1 + side2 A common mistake is people think the side
length is equal to the height. It is not. The height is a line drawn perpendicular to
the base Properties of a trapezoid
Hope it helps