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The use of coordinate geometry and algebra to prove theorems in geometry

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Is a quadrilateral with two pairs of consecutive sides congruent and no opposite sides congruent.

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Is the segment that joins the midpoints of it's legs.

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Is a trapezoid with legs that are congruent.

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The two angles that share a base of a trapezoid.

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The nonparallel sides of trapezoid.

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The parallel sides of a trapezoid

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Is a quadrilateral with exactly one pair of parallel sides.

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Is a parallelogram with four congruent sides and four right angles.

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Is a parallelogram with four right angles.

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Is a parallelogram with four congruent sides

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Do not share a side.

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Do not share a vertex.

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Is a quadrilateral with both pairs of opposite sides parallel.

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Is a polygon that is both equilateral and equiangular.

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Is a polygon with all angles congruent.

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Is a polygon with all sides congruent.