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Trapezoids Section 5-5
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Trapezoid A quadrilateral with exactly one pair of parallel sides.
The other pair is not allowed to be parallel
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Parts of a trapezoid Bases Legs The parallel sides
The non-parallel sides leg base base leg
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Isosceles Trapezoid A trapezoid with congruent legs
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Theorem 5-18 Base angles of an isosceles trapezoid are congruent
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Median A segment that connects the midpoints of the legs of any trapezoid median
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Theorem 5-19 The median of a trapezoid: Is parallel to the bases
Has a length equal to the average of the bases 20 35 50
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