The angles of a triangle are in the ratio 1 : 1 : 2. What percentage of the total internal angle is the greatest angle?
Answer & explanation
Correct answer: option 1
Ratio of angles = 1 : 1 : 2 = 4R
Total internal angle = 180° = 4R
1R = 45°
∴ Greatest angle = 90°
Thus, the greatest angle is 50% of the total internal angle