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Mathematics
OpenStudy (anonymous):

What is the sum of the degree measures of the marked angles?

OpenStudy (anonymous):

|dw:1338136054540:dw|

Parth (parthkohli):

This is the exterior angle theorem. Any given exterior angle on the vertex of a triangle is the sum of the two opp interior angles.

OpenStudy (asnaseer):

@ParthKohli is correct: |dw:1338136530615:dw|

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