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Mathematics 24 Online
OpenStudy (anonymous):

Find unknown angle measure in each of the diagrams. [pictures available]

OpenStudy (anonymous):

a) |dw:1367901944034:dw|

OpenStudy (nottim):

Wouldn't "X" by 180-140?

OpenStudy (nottim):

be

OpenStudy (anonymous):

Oh yes. It's because of the triangle property, the sum of interior angles of a triangle must add up to 180 degrees. I wonder, what kind of angle is that 140 degrees?

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