Question

Angles of a quadrilateral are in the ratio 3: 4: 5: 8. The smallest angle is:

Options

• 20°

• 54°

• 36°

• 18°

Answer 1

54°

Explanation:

Let the angles be 3x, 4x, 5x, and 8x

3x + 4x + 5x + 8x = 360°

20x = 360°

x = 18°

∴ Smallest angle = 3 × 18° = 54°