6.65 Quadrilateral Proofs (Day 1) (2009)
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Transcript of 6.65 Quadrilateral Proofs (Day 1) (2009)
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LAST NIGHT’S HWLAST NIGHT’S HW
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6.656.65Quadrilateral Quadrilateral
ProofsProofsNeed:Need:-Notes-Notes-Conjecture List-Conjecture List
Five Properties of a Five Properties of a ParallelogramParallelogram
Opposite sides are Opposite sides are parallelparallel
Opposite sides are Opposite sides are congruentcongruent
Opposite angles Opposite angles are equalare equal
Consecutive angles Consecutive angles supplementarysupplementary
Diagonals bisect Diagonals bisect eachothereachother
Can you draw a quadrilateral that Can you draw a quadrilateral that has opposite congruent sides and has opposite congruent sides and is not a parallelogram?is not a parallelogram?
Can you draw a quadrilateral that Can you draw a quadrilateral that has opposite congruent angles has opposite congruent angles and is not a parallelogram?and is not a parallelogram?