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Formula Sheet

Geometry — Formula Sheet

Tamil Nadu Board · Class 10 · Mathematics

2 formulas from Geometry (Tamil Nadu Board Class 10 Mathematics) on one page, grouped by topic. Includes Formula.

44 questions26 flashcards2 formulas & key relations5 concepts

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A diagram illustrating the steps for the proof of the Basic Proportionality Theorem, involving construction of perpendiculars and joining vertices to form triangles with equal areas.
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An illustration from Super Tutor's Geometry chapter — alongside flashcards, concept maps and practice questions.

2 Entries · 2 Sections

Formulas and Key Relations

3 Thales Theorem and Angle Bisector Theorem

If DE || BC in △ABC, then AD/DB = AE/EC

4 Pythagoras Theorem

Formula

c² = a² + b², where c is hypotenuse and a, b are the other two sides

Full sheet with units and worked examples

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Frequently Asked Questions

What are the important topics in Geometry for Tamil Nadu Board Class 10 Mathematics?
Key topics in Geometry include 2 Similarity of Triangles, 3 Thales Theorem and Angle Bisector Theorem, 4 Pythagoras Theorem, 5 Circles and Tangents. Study these first, then practise questions on each for the Tamil Nadu Board Class 10 board exam.
How many formulas are in Geometry?
This sheet lists 2 formulas from Geometry, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Geometry for the Tamil Nadu Board Class 10 board exam?
Learn the core ideas first, then work through the 44 practice questions on Geometry. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Geometry

All Tamil Nadu Board Class 10 Mathematics Formula Sheet

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