Find missing angles of a quadrilateral?

Two angles measure 3.3 degrees and 312.5 degrees. The other two angles are in a ratio of 2:11. What are the measurements of the other two angles?
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1 Answer

Call one of the other 2 angles 2x, then the remaining angle is 11x.

 11x+2x+3.3+312.5=360, 13x=360-315.8=44.2, x=44.2/13=3.4.

The other angles are 6.8 and 37.4 degrees.
by Top Rated User (1.1m points)

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