NCERT Class 7 Maths Chapter 7 A Tale of Three Intersecting Lines Extra Questions with Answers

Class 7 Maths Chapter 7 Extra Questions with Answers

Q1. What are intersecting lines?
Answer: Intersecting lines are lines that meet at a common point.

Q2. How many angles are formed when two lines intersect?
Answer: Four angles.

Q3. What is the sum of angles around a point?
Answer: 360°.

Q4. What is the sum of adjacent angles on a straight line?
Answer: 180°.

Q5. Vertically opposite angles are always ________.
Answer: Equal.

Q6. If one angle is 65°, what is its vertically opposite angle?
Answer: 65°.

Q7. If one angle is 110°, what is the adjacent angle?
Answer: 70°.

Q8. Three lines intersect at one point. What is the total sum of all six angles formed?
Answer: 360°.

Q9. If one angle is 40°, what is the angle on the same straight line?
Answer: 140°.

Q10. Which pair of angles is always equal when two lines intersect?
Answer: Vertically opposite angles.

Q11. How many pairs of vertically opposite angles are formed by two intersecting lines?
Answer: Two pairs.

Q12. What is the angle between two perpendicular lines?
Answer: 90°.

Q13. Name one real-life example of intersecting lines.
Answer: Road crossing (crossroads).

Q14. Why is the concept of intersecting lines important?
Answer: It helps in understanding angle relationships and solving geometry problems.

Q15. Which property is most useful when solving questions on intersecting lines?
Answer: Vertically opposite angles are equal, and angles on a straight line add up to 180°.