Class 10 Maths: Triangles Formulas (PDF) — All Important Formulas Free
Free class 10 maths: triangles formulas — all 7 key formulas on one page, downloadable as PDF for fast revision before CBSE board exams. No signup.
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TL;DR: Free class 10 maths: triangles formulas — all 7 key formulas on one page, downloadable as PDF for fast revision before CBSE board exams. No signup.
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All Triangles formulas for Class 10 Maths (CBSE / NCERT) on one page — fast revision for board exams. 100% free, no login, download as PDF.
Triangles — Key Formulas
| Formula | Expression |
|---|---|
| Similarity criterion: AA | Two angles equal → triangles similar |
| Similarity criterion: SSS | All sides proportional → triangles similar |
| Similarity criterion: SAS | Two sides proportional + included angle equal → similar |
| Basic Proportionality Theorem (Thales) | Line || to side divides other sides proportionally |
| Pythagoras theorem | In right △: a² + b² = c² (c = hypotenuse) |
| Converse Pythagoras | If a² + b² = c² then △ is right-angled |
| Area ratio & similarity | If triangles ~ with ratio k, area ratio = k² |
FAQs
What are the most important Triangles formulas for Class 10?
This sheet lists all 7 key Triangles formulas from the Class 10 Maths CBSE/NCERT syllabus, ready for quick revision.
Is this Triangles formula sheet free to download?
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