Chapter 6.4: Proving Quadrilaterals are Parallelograms Flashcards

1
Q

Thm. 6.7

A

if both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram.

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2
Q

Thm. 6.8

A

if both pairs of opposite angles of a quadrilateral are congruent, then the quadrilateral is a parallelogram.

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3
Q

Thm. 6.9

A

if an angle of a quadrilateral is supplementary to both consecutive angles, then the quadrilateral is a parallelogram.

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4
Q

Thm. 6.10

A

if the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram.

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5
Q

Thm. 6.11

A

if one pair of opposite sides of a quadrilateral are congruent and parallel, then the quadrilateral is a parallelogram.

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