Class 10 (English Medium) · Math · Chapter 6
Triangles
This chapter studies similar triangles. It explains the difference between congruent and similar figures, the Basic Proportionality Theorem (Thales' theorem) and its converse, the three criteria for similarity of triangles (AAA/AA, SSS, SAS), the theorem on the ratio of areas of similar triangles, and the Pythagoras theorem with its converse (retained by many State Boards). It is a proof-and-application-rich chapter important for both CBSE and State Board examinations.
8 sections · ~405 min read · Free, no login needed
Start Reading Topics in this chapter
- 1
Introduction and Similar Figures
40 min read · Quiz included
- 2
Basic Proportionality Theorem (Thales' Theorem)
45 min read · Quiz included
- 3
Criteria for Similarity of Triangles
45 min read · Quiz included
- 4
Areas of Similar Triangles
40 min read · Quiz included
- 5
Pythagoras Theorem and its Converse
45 min read · Quiz included
- 6
Solved Examples
90 min read
- 7
Board Previous Year Questions
80 min read
- 8
Chapter Summary & Quick Revision
20 min read