The angles of a triangle are in the ratio 1 : 1 : 2. What percentage of the total internal angle is the greatest angle?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 50%.
Given that
The internal angles of a triangle in the ratio of 1 : 1 : 2
As we know that
The sum of internal angles of a triangle = 180º
Calculation
1 unit + 1 unit + 2 units = 180º
4 units = 180º
1 unit = 45º
Greatest angle = 2 units = 90º
Hence, the required percentage = (90/180) × 100 = 50 %