Triangle in Geometry Formula Class 10 PDF Free Download

Are you looking for the most important formulas of Geometry for Class 10? In this post, we’ve compiled all essential formulas and key concepts from Chapter 7 – Triangle in Geometry of Class 10 NCERT Maths. You can also download a free PDF of all formulas to help you revise quickly and score better in exams.

1. Thales Theorem :

2. Converse of Thales Theorem :

3. Midpoint Theorem :

4. Angle Bisector Theorem :

5. If two triangles similarity then :

6. A – A – A Similarity :

7. A – A Similarity :

8. S – A – S Similarity :

9. S – S – S similarity :

10. If two triangle similarity then 

11. If AL and DM are medians of ΔABC and ΔDEF then 

12. If AL and DM are bisectors of angle A and angle D then  

13. If ΔABC ∼ ΔDEF then 

14. If ΔABC ∼ ΔDEF then 

15. If ΔABC ∼ ΔDEF , AL ⊥ BC and DM ⊥ EF then 

16. If ΔABC ∼ ΔDEF , AL and DM are medians of ΔABC and ΔDEF respectively then –

17. If ΔABC ∼ ΔDEF , AL and DM are bisevtors of angle A and angle D respectively then –

18. Pythagoras Theorem :

19. Converse of Pythagoras Theorem :

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