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OpenStudy (anonymous):
Geometry help D:
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OpenStudy (agent0smith):
|dw:1367201278869:dw| The 40 and 40 are vertical angles which are equal. The 85 forms a supplementary angle with (180-85) (supplementary angles add up to 180 because they form a straight line) Notice the two a's are vertical angles too.
OpenStudy (anonymous):
so a is 45?
OpenStudy (agent0smith):
Looks that way :)
OpenStudy (anonymous):
ok, thanks
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