The two other angles are 3x and 14x, where x is thoir common measure (now unknown). Using the fact that the sum of interior angles of any triangles is 180 degrees, you have an equation 3x + 14x + 10 = 180, or 17x = 180 - 10 17x = 170 =======> x = 170/17 = 10 degrees. Then the two unknown angles are 3*10 = 30 degrees and 14*10 = 140 degrees. ANSWER. Two unknown angles are 30 degrees and 140 degrees.