lesson 5.5 properties of parallelograms
step 3:sum of measures of each pair of consecutive angle is 180. angles e and o sums up to 180. angle v and l sums up to 180 also.
Parallelogram Opposite Angles Conjecture
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The opposite angles of a parallelogram are congruent
Parallelogram Consecutive Angles Conjecture
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The consecutive angles of a parallelogram are supplementary.
Parallelogram Opposite Sides Conjecture
-----------------------------------------The opposite sides of a parallelogram are congruent.
Parallelogram Diagonals Conjecture
------------------------------------The diagonals of a parallelogram are bisectors.