Question

Find the minimum number of straight lines required to make the given figure.

• A. \(9\)
• B. \(11\)
• C. \(14\)
• D. \(12\)
• E. \(8\)

Answer 1

The Correct Option is B

Concept: This is a
counting of straight lines problem involving:

• Identifying distinct straight line segments
• Counting continuous lines as one
• Avoiding double counting

Step 1: Count horizontal lines.

• Base line = 1
• Internal horizontal lines = 3

Total horizontal lines = 4
Step 2: Count slanting lines (left to right).

• Left boundary = 1
• Internal slanting lines = 3

Total = 4
Step 3: Count slanting lines (right to left).

• Right boundary = 1
• Internal slanting lines = 2

Total = 3
Step 4: Total lines.
\[ 4 + 4 + 3 = 11 \]
Step 5: Option analysis.

• (A) 9: Under-counted $\times$
• (B) 11: Correct count \checkmark
• (C) 14: Over-counted $\times$
• (D) 12: Extra counting $\times$
• (E) 8: Missing several lines $\times$

Conclusion:
Thus, the correct answer is
Option (B).