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Mathematics 20 Online
OpenStudy (anonymous):

Given CD is parallel to AB Angle EDA is congruent to angle CBF Prove: ABCD is a parallelagram

OpenStudy (mathstudent55):

Is there a picture?

OpenStudy (anonymous):

|dw:1355719017203:dw|

OpenStudy (anonymous):

thats much easier then

OpenStudy (anonymous):

|dw:1355719195925:dw| not to scale

OpenStudy (anonymous):

think of a rectangle its just slanted (but it also has special properties)

OpenStudy (anonymous):

Thanks

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