Question

which quadrilateral is a trapezoid?

Explanation:

A trapezoid is defined as a quadrilateral with exactly one pair of parallel sides.

• In the first figure (ABCD), there are two pairs of parallel sides (AB parallel to CD and AD parallel to BC), so it is a parallelogram (not a trapezoid).
• In the second figure (EFGH), there is exactly one pair of parallel sides.
• In the third figure (IKLM), there are two pairs of parallel sides (IK parallel to LM and IL parallel to KM), so it is a parallelogram (not a trapezoid).

Answer:

The second quadrilateral (EFGH) is a trapezoid.