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OpenStudy (lisa2345):
help me find all the angles PICTURE DOWN BELOW
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OpenStudy (lisa2345):
OpenStudy (mrnood):
OK - this requires only 2 bits of knowledge: what do 'angles on a straight ;ine' add up to?? |dw:1464807464700:dw|
OpenStudy (lisa2345):
180?
OpenStudy (mrnood):
Yess good - they add to 180 so what is the unknown angle above?
OpenStudy (kash_thesmartguy):
|dw:1464807472805:dw| Any questions?
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OpenStudy (lisa2345):
so which is supplementary?
OpenStudy (mrnood):
Just answer the number above - you said they ADD to 180 - one is 115 - so what is the other? Then 'corresponding angles on parallel lines are EQUAL: |dw:1464807650771:dw|
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