Watch this chapter
Mathematics · Class 9TrianglesVideo coming soonRead the notes instead
Free notes for this chapterMark as Completed
Congruence Criteria, Properties of Triangles, Inequalities in a Triangle and the board questions built on them — roughly 7 marks of the paper.
What this chapter covers
- 1Congruence Criteria
- 2Properties of Triangles
- 3Inequalities in a Triangle
These lessons are being recorded. The written notes for this chapter are free to download now.
Learning resources
Seedha Notes
Chapter notes withimportant points,examples & format
View Notes for Triangles, MathematicsPractice Questions
Important questions,board questions,numericals
Practice Now for Triangles, MathematicsPrevious yearquestions withfull solutions
View PYQs for Triangles, MathematicsSample Paper
Board patternsample paper withmarking scheme
Open Paper for Triangles, Mathematics
In the notes
Topics covered
- 01Congruence Criteria30:21
- 02Properties of Triangles25:47
- 03Inequalities in a Triangle31:03
After this chapter you can
- Explain congruence criteria without reading from the book
- Present properties of triangles in the format the marking scheme rewards
- Attempt every previous year question set on this chapter
- Marks
- 7
- PYQs
- 15
- Video
- 1h 27m
Then do the work
- One-shot revision, 22 minutes
- Formula sheet for this chapter
- Printable summary, 2 pages
Prepare
| Year | Asked as | Marks |
|---|---|---|
| 2025 | Long answer | 2 |
| 2024 | Short answer | 4 |
| 2023 | Case based | 2 |
| 2022 | MCQ set | 4 |
| 2021 | Long answer | 6 |
Recommended for you
Move through Mathematics
Follow the Seedha path
Target 95+ in Mathematics
Padho, Likho, Revise and Marks Laao. Chapter 7 of 12 — keep going while the format is fresh.