The residents of a downtown neighborhood designed a​ triangular-shaped park as part of a city beautification program. The park is bound by streets on all sides. The second angle of the triangle is 7° more than the first. The third angle is 7° less than seven times the first. Find the measures of the angles.
You have x , x+7, and 7x-7. When you add those up and equal it to 180 you can get your x. X equals 20 So one angle is 20 degrees The second angle is 27 degrees And the third angle is 133 degrees.