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Mathematics 7 Online
OpenStudy (anonymous):

A curb­cut for wheel chairs must meet ADA (American with Disabilities Act) requirements. Find the measure of ∠1 in the diagram below.

OpenStudy (anonymous):

OpenStudy (anonymous):

168° 12° 178° 78°

OpenStudy (owlcoffee):

Well, we know that a very useful propery of triangles is that their angles sum up to 180º. If we know that one is 90º and the other is 78º. What must be the measur of the third angle, to make them all sum up to 180?

OpenStudy (anonymous):

12!!

OpenStudy (owlcoffee):

Good!

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