Properties of Trapezoids

Front

What is a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

What are the properties of an isosceles trapezoid?

Back

An isosceles trapezoid has one pair of parallel sides, and the non-parallel sides (legs) are congruent.

Front

What are the base angles of an isosceles trapezoid?

Back

The base angles of an isosceles trapezoid are congruent.

Front

How do you find the length of the midsegment of a trapezoid?

Back

The length of the midsegment (XY) is the average of the lengths of the two bases: XY = (Base1 + Base2) / 2.

Front

If the bases of a trapezoid are 20 and 30, what is the length of the midsegment?

Back

The length of the midsegment is (20 + 30) / 2 = 25.

Front

What is the sum of the interior angles of a trapezoid?

Back

The sum of the interior angles of a trapezoid is 360 degrees.

Front

What is the relationship between the legs of an isosceles trapezoid?

Back

The legs of an isosceles trapezoid are congruent.

Front

If one base of a trapezoid is 10 and the other is 14, what is the midsegment?

Back

The midsegment is (10 + 14) / 2 = 12.

Front

What is the formula for finding the area of a trapezoid?

Back

Area = (Base1 + Base2) / 2 * height.

Front

If the height of a trapezoid is 5 and the bases are 8 and 12, what is the area?

Back

Area = (8 + 12) / 2 * 5 = 50.