The measures of the angles of △RST are given by the expressions in the table.Angle MeasureR 31°S (x + 4)∘T (3x + 9)∘Find the value of x. Then find the m∠S and m∠T.Enter your answers in the boxes.x = __ m∠S= __ ºm∠T= __ º
Accepted Solution
A:
interior angles of a triangle add up to 180 degrees