Geometry

Question Analysis
This question tests the understanding of the contrapositive of a statement about trapezoids.

Key Concept Explanation:
The contrapositive of "If P, then Q" is "If not Q, then not P."

Step-by-Step Solution:
Original statement: "If a shape is a trapezoid (P), then it has at least one pair of parallel sides (Q)."
Contrapositive: "If a shape does not have at least one pair of parallel sides (not Q), then it is not a trapezoid (not P)."
The statement is true.

Common Mistakes:
Confusing trapezoids with other quadrilaterals ...