6.65 Quadrilateral Proofs (Day 1) (2009)

Post on 04-Jul-2015

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DO NOW

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?