
Whether the statement is always, sometimes or never true.

Answer to Problem 53PPS
The given statement is sometimes true.
Explanation of Solution
Given:
The given statement is:
The opposite
Calculation:
In a trapezoid, there is exactly one pair of parallel sides.
In an isosceles trapezoid, the legs of trapezoid are congruent.
In an isosceles trapezoid, the opposite angles are supplementary.
If the trapezoid is not isosceles, then its opposite angles are not supplementary.
Hence, the given statement is sometimes true.
Chapter 6 Solutions
Geometry, Student Edition
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