Class 7 Maths · Ganita Prakash Part 1 · Chapter 5
Parallel and Intersecting Lines
Angles made by crossing lines, parallel lines cut by a transversal — the geometry rules every later class leans on.
Video coming soon — meanwhile, watch free classes on our YouTube channel →
Rashmi Ma’am teaches the full chapter free on YouTube — watch first, then practise below.
What your child learns
- Identify vertically opposite angles and linear pairs — and why they behave as they do
- Recognise corresponding and alternate angles when a transversal crosses parallel lines
- Use angle relationships to find unknown angles without measuring
- Check whether two lines are parallel using angle evidence
- Draw parallel and perpendicular lines cleanly
Parent pointer
Geometry marks are the easiest to secure in exams — the rules are few and they never change. If your child learns to write the reason next to every angle (“vertically opposite”, “alternate angles”), they’ll keep full marks through Class 10. Start that habit in this chapter.
Stuck on this chapter? Message us — tell us the exercise number and we’ll point you to the right video.
💬 Ask about this chapterPractise it — the Azone loop
Watch the class
Full chapter above, free. Pause and solve along — that’s the rule.
Quick questions parents ask
My child finds the angle names confusing — F, Z, X angles?
Those letter-shapes (F = corresponding, Z = alternate, X = vertically opposite) are memory aids, and they work — but exams want the proper names. The video teaches the shape trick and the proper vocabulary together.
Does this chapter matter for Tallentex and Olympiads?
Very much. Angle-chasing questions are a fixture in every Class 7 competitive paper, and they’re very winnable — the rules fit on one page. Our test series has them in every mock.
Want this chapter to actually stick?
Join the small live online batch (max 20 students) — weekly tests, doubt solving and a parent report card. Or start with a free demo class.