Question 361758
180 degree is the sum of the angles of a triangle.
let's say "y" is the smallest angle and "x" is the other 2 equal angles.
2y+10 = x
(=>> means therefore)
2x + y = 180 =>> (2y + 10)*2 + y = 180 >> 5y + 20 = 180 =>> 32 degree = y
Moreover, x = 2*32 + 10 = 74 degrees

Check >> 2x + y = 180 =>> 74*2 + 32 = 148 + 32 = 180 degree
Check >> 2y + 10 = x =>> 2*32 +10 = 74!

x = 74,y = 32

Everything is OK then :)