Question

the second angle in a triangle is 4 times as the first angle . the thrid angle 5 times as large as first find all mesures

Answer 1

let the first angle will be x, then the second will be 4x, and finally the third
will be 5x. we now thet sum of angles in triangle is 180 degrees so x+4x+5x=180
so 10x=180 x=18 so first 18 degrees, second 72 degrees, and the third is 5*18=90
degrees