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Mathematics 9 Online
OpenStudy (anonymous):

quadrilateral abcd is a parallelogram in which angle a is 40 degrees? what is

OpenStudy (anonymous):

|dw:1342547786135:dw|

OpenStudy (anonymous):

Hint: <a+<b = 180 and <b+<c=180

OpenStudy (anonymous):

soo 40+2x=180

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