Question

The angles of a triangle are in the ratio 1 ∶ 1 ∶ 2. What percentage of the total internal angle is the greatest angle?

• A. 50%
• B. 65%
• C. 45%
• D. 40%

Answer 1

Answer:

A. 50%

Let the angle of the triangle be x, x, 2x Sum of angles = 180° x + x + 2x = 180° 4x = 180° x = 45° 2x = 2 × 45° = 90° Percentage of the greatest angle [90/180] × 100 = 50%