The angles of a triangle are in the ratio 1:3:8. Find the measurement of the three angles of triangle.	Options:	A) 100°	B) 110°	C) 120°	D) 140°	E) 160°
If the ratio of the three angles is 1:3:8, then the measures of these angles can be written as x, 3x and 8x. Also the sum of the three interior angles of a triangle is equal to 180°. Hence   x + 3x + 8x = 180   Solve for x   12x = 180   x = 15   The measures of the three angles are   x = 15°   3x = 3 × 15 = 45°   8x = 8 × 15 = 120°   120°
<result>C</result>
The angles of a triangle are in the ratio 1:3:8. Find the measurement of the three angles of triangle.