Question

geometry » triangle angle-sum theorem y+27°+4y+113=180what is the value of y?y= [ ]°

Answer 1

1) Considering that the sum of the interior angles of a triangle is 180º, i.e., what the triangle angle-sum theorem means

2) Let' solve for y

y+27°+4y+113=180 Combine like terms

5y +140 = 180 Subtract 140º from both sides.

5y = 40 Divide both sides by 5

y=8

2) Hence y = 8