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Tripura Board Class 9 Mathematics — Formula Sheet

Tripura Board Class 9 Mathematics formula sheet, chapter by chapter — 38 formulas across 7 chapters. Follows the TBSE syllabus.

How to Use the Formula Sheet

  1. Write, don't just read — writing each formula out helps it stick.
  2. Understand the derivation — you can rebuild a formula you half-remember.
  3. Group related formulas — link the ones that build on each other.
  4. Test yourself — cover the sheet and write the formulas from memory.

Chapter-Wise Formulas — 7 Chapters

1

Number System

3 entries
Numbers like √2, √3, π that cannot be expressed as p/q form.
Example: √2 = 1.41421356...
Using Pythagoras theorem and compass construction, we can locate irrational numbers like √2, √3 on the number line.
The full Number System formula sheet
2

Polynomials

9 entries
p(x) = aₙxⁿ + aₙ₋₁xⁿ⁻¹ + ... + a₁x + a₀
p(a) = 0 ⟹ a is a zero of p(x)
Zero of ax + b = −b/a
When p(x) is divided by (x − a), Remainder = p(a)
Finding zeros involves solving p(x) = 0
The full Polynomials formula sheet
3

Coordinate Geometry

9 entries
Quadrant I → (+, +)
Quadrant II → (−, +)
Quadrant III → (−, −)
Quadrant IV → (+, −)
Step 1: Identify x-coordinate (abscissa) → move horizontally from origin
The full Coordinate Geometry formula sheet

4 more chapters below

Formula sheets for all 7 chapters with formulas.

Get the Formula Sheets

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Frequently Asked Questions

Where can I find Tripura Board Class 9 Mathematics Formula Sheet?

This page has formula sheet for 7 chapters of Tripura Board Class 9 Mathematics for the 2026-27 session. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Learn the formulas you use most first, and understand what each symbol means so you can apply them. Knowing where a formula comes from helps you rebuild it if you forget it in the exam.

Browse Formula Sheet by Chapter

7 chapters

1

Number System

2

Polynomials

3

Coordinate Geometry

4

Linear Equations in two Variables

5

Introduction to Euclid's Geometry

10

Surface Areas and Volumes

11

Heron's Formula

More Mathematics Resources

Tripura Board Class 9

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Revision Notes

Key concepts and quick revision points

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Study Plan

Week-by-week preparation schedule

Flashcards

Quick-fire cards for active recall practice

Syllabus

Chapter list and the topics in each

NCERT Solutions

Every textbook exercise solved step by step

Other Tripura Board Class 9 Subjects

Science