CBSE Class 10 Maths – Triangles

Triangles is the core geometry chapter carrying approximately 8-10 marks in CBSE Class 10 Mathematics. It emphasizes the concept of similarity of triangles, establishing similarity criteria and proving the foundational Basic Proportionality Theorem.

The chapter covers similar figures, the formal proof of the Basic Proportionality Theorem (Thales' Theorem) and its converse, and triangle similarity criteria including AAA, SSS, and SAS.

Students must memorize and write the formal proof of the Basic Proportionality Theorem with accurate diagrams, practise setting up side ratios from similarity statements, and write deductive proofs cleanly.

TutorVertex provides comprehensive question banks for Triangles, covering direct side-ratio problems as well as complete 5-mark board theorem proofs.