In this video students learn the definitions of a trapezoid, an isosceles trapezoid, and the median of a trapezoid. Students also learn the following theorems related to trapezoids. The base angles of an isosceles trapezoid are congruent. The median ...of a trapezoid is (a) parallel to the bases and (b) has a length equal to the average of the lengths of the bases.[more]

Students learn the definitions of a trapezoid, an isosceles trapezoid,
and the median of a trapezoid. Students also learn the following
theorems related to trapezoids. The base angles of an isosceles
trapezoid are congruent. The median of a trapez...oid is (a) parallel to
the bases and (b) has a length equal to the average of the lengths of
the bases. (01:40)[more]

This video makes comparisons of the characteristics of trapezoids and parallelograms. Addressing the question as to whether a parallelogram is also a trapezoid. The answer will depend on your definition of trapezoid. If a trapezoid has exactly one pa...ir of parallel lines, then parallelogram doesn't fit within those conditions or parameters. If your definition of trapezoid states that is has at least one pair of parallel sides, then all parallelograms could be considered trapezoids. Your answer then depends on your definition.[more]

In math, finding the height of a trapezoid can be done by first finding the area and working backwards. Find the height of a trapezoid with tips from a math teacher in this video.

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