NCERT Class 7 Maths Part 2 Chapter 1 Geometric Twins Extra Questions with Answers

Class 7 Maths Part 2 Chapter 1 Extra Questions with Answers

Q1. What are congruent figures?
Answer: Congruent figures have the same shape and the same size.

Q2. Can two congruent figures have different orientations?
Answer: Yes.

Q3. What is meant by symmetry?
Answer: Symmetry means a figure can be divided into two identical halves.

Q4. How many lines of symmetry does a square have?
Answer: 4

Q5. How many lines of symmetry does a rectangle have?
Answer: 2

Q6. How many lines of symmetry does an equilateral triangle have?
Answer: 3

Q7. How many lines of symmetry does a circle have?
Answer: Infinitely many.

Q8. Are all similar figures congruent?
Answer: No.

Q9. Are all congruent figures similar?
Answer: Yes.

Q10. Which transformation keeps the size and shape of a figure unchanged?
Answer: Reflection, rotation, and translation.

Q11. What is the mirror line of a figure called?
Answer: Line of symmetry.

Q12. Name one real-life object having symmetry.
Answer: Butterfly.

Q13. What do we call figures with the same shape but different sizes?
Answer: Similar figures.

Q14. Why is symmetry important in geometry?
Answer: It helps us understand patterns, designs, and balanced shapes.

Q15. Where is symmetry used in daily life?
Answer: In architecture, rangoli, logos, art, nature, engineering, and design.