Question 347646
x, x+10 & x+50 are the three angles.
x+x+10+x+50=180
3x=180-10-50
3x=120
x=120/3
x=40 degrees for the smaller angle.
40+10=50 degrees for the middle angle.
40+50=90 degrees for the largest angle.
Proof:
40+50+90=180
180=180