NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 9: Symmetry and Practical Geometry - Multiple Choice Questions

Question 7

Step 1: What is a line of symmetry?

A line of symmetry divides a shape or letter into two equal halves that match when folded along that line.

Step 2: Check each option.

1. H — Draw a vertical line through the middle and a horizontal line through the middle.

   Both lines make two matching halves.

   So, H has 2 lines of symmetry.

2. X — Draw a line along each diagonal.

   Each diagonal makes two matching halves.

   So, X has 2 lines of symmetry.

3. Z — Try vertical, horizontal, or diagonal lines.

   None of these lines make two matching halves.

   So, Z has 0 lines of symmetry.

4. T — Draw a vertical line down the center.

   The left and right halves match.

   But a horizontal line does not make matching halves.

   So, T has exactly 1 line of symmetry (vertical).

Final Answer: T (Option D) has only one line of symmetry.