A triangle has angles in the ratio 2:3:4. What are the angles?
Show answer & explanation
Correct answer: B
Explanation
Let the angles of the triangle be 2x, 3x, and 4x:
The sum of the three angles of a triangle is 180°.
2x + 3x + 4x = 180°
9x = 180°
x = 20°
Now, the angles will be:
2x = 2 × 20 = 40°
3x = 3 × 20 = 60°
4x = 4 × 20 = 80°