# Triangles

## Concept Lectures

Session # 1: Concept of Similarity. The Session discusses the concept of similarity and the difference between being similar and being same. How do cartographers use the concept of scale to draw maps? The concept of scale in similarity.

Session # 2: Criteria for Similarity of Polygons

Session # 3: Criteria for Similarity of Triangles

Session # 4: Basic Proportionality Theorem and its proof (Thales' Theorem)

Session # 5: Corollaries to Basic Proportionality Theorem

Session # 6: Converse of Basic Proportionality Theorem and its proof

## Solved Examples

Session # 7: Solved Example # 01 Application of Basic Proportionality Theorem (Thales' Theorem)

Session # 8: Solved Example # 02 Application of Basic Proportionality Theorem

Session # 9: Solved Example # 03 Application of Basic Proportionality Theorem

Session # 10: Solved Example # 04 Application of Basic Proportionality Theorem

Session # 11: Solved Example # 05 Application of Basic Proportionality Theorem

Session # 12: Solved Example # 06 Application of Basic Proportionality Theorem

Session # 13: Solved Example # 07 Application of Basic Proportionality Theorem and its converse