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Geometry for School and Home
Activity 3.8
Assignment 3.9
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Assignment 4.21
The Midsegment of a Trapezoid
Objectives
Name and measure midsegments of trapezoids.
Develop and apply a theorem for the lengths of midsegments in trapezoids.
About Geometry Worksheet Assignment 4.21:
Assignment 4.21 is an introduction to midsegments in trapezoids.
Prerequisite Skills: Measure line segments (Assignment 1.11). Solve algebraic equations with one variable.
Definition: A midsegment of a trapezoid is a line segment with endpoints at the midpoints of the legs of the trapezoid.
Theorems: The midsegment of a trapezoid is parallel to the bases of the trapezoid and its length is one-half the sum of the lengths of the bases.
The length of a base of a trapezoid is the difference between twice the length of the midsegment and the length of the other base.