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Mathematics 7 Online
OpenStudy (anonymous):

Prove that the opposite angles of a parallelogram are congruent.

jhonyy9 (jhonyy9):

how do you know what property have the opposite sides of a paralleogramm ?

OpenStudy (anonymous):

I'm sorry, what do you mean?

jhonyy9 (jhonyy9):

parallelogramm sorry for missed l

jhonyy9 (jhonyy9):

so the opposite sides are equales and paralleles ,yes ?

jhonyy9 (jhonyy9):

so from these what resulte how do you think ?

OpenStudy (anonymous):

Alternate interior angles theorem and angle addition postulate will serve nicely.

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