Algebra
posted by Laur .
Two angles of a triangle measure 55 degrees and 47 degrees. What is the number of degrees in the measure of the supplement of the remaining angle of the triangle?

Remaining angle = 180  (55 + 47)
Supplementary angles total 180 degrees
You should be able to try this now. 
the measure of the frist angle of a triangle is 10 degrees more than the measure of the second. the measure of the third angle of the triangle is five less than three times the measure of the second. find the measure of the angles of the triangle.
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