Definition:Median of Trapezoid

Definition

Let $\Box ABCD$ be a trapezoid.

The median of $\Box ABCD$ is the straight line through the midpoints of the legs of $\Box ABCD$.

In the above diagram, $EF$ is the median of the trapezoid $\Box ABCD$.

Also known as

The median of a trapezoid is also known as its midline.

Also see

• Median of Trapezoid is Parallel to Bases

Sources

• 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): median: 3.
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): median (midline): 2.
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): median (midline): 2.