If a 90 degree stub is to be bent using 10 degree segments, how many bends are required?

• A. 8 bends
• B. 9 bends
• C. 10 bends
• D. 11 bends

Answer: (B)

To reach a specific total bend when using fixed-angle segments, you add up the individual bend angles. Each bend contributes 10 degrees, so the total angle is 10 degrees times the number of bends. To get 90 degrees, you need 90 ÷ 10 = 9 bends. Eight bends would give 80 degrees, and ten bends would give 100 degrees, so nine bends exactly achieves the 90-degree stub.