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January 31, 2015

January 31, 2015

Posted by **x** on Wednesday, April 13, 2011 at 4:24pm.

x degrees, 120 degrees minus x degrees

- math -
**MathMate**, Wednesday, April 13, 2011 at 5:52pmThe angles of a triangle add up to 180°.

x + (120-x) + third angle = 180°

third angle = 180° - x - (120-x)

= 180° - 120°

= 60°

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