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Chapter 6 Class 10 Triangles

Master Chapter 6 Class 10 Triangles with comprehensive NCERT Solutions, Practice Questions, MCQs, Sample Papers, Case Based Questions, and Video lessons.

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Updated for new NCERT 2024-2025 Edition.

Get NCERT Solutions of Chapter 6 Class 10 Triangles free at teachoo. Solutions to all NCERT Exercise Questions, Examples, Theorems, Optional Exercises are available with Videos of each and every question.

 

We have studied Congruency of Triangles in Class 9.

In this chapter, we will learn

  • What are Similar figures
  • Difference between Congruency and Similarity
  • Basic Proportionality Theorem (BPT) - with Proof (Theorem 6.1)
  • Inverse of Basic Proportionality Theorem - with Proof (Theorem 6.2)
  • AAA (Angle Angle Angle) Similarity i.e. all 3 angles equal, with Proof (Theorem 6.3)
  • Is AA and AAA the same?
  • SSS (Side Side Side) Similarity i.e. all 3 sides in proportion, with Proof (Theorem 6.4)
  • SAS (Side Angle Side) Similarity, i.e. 2 sides in proportion, and 1 angle between them equal - with Proof (Theorem 6.5)
  • Ratios of areas of two similar triangles is equal to square of ratio of their corresponding sides  - with Proof (Theorem 6.6)
  • Theorem 6.7 - If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse then triangles on both sides of the perpendicular are similar to the whole triangle and to each other
  • Pythagoras Theorem Proof (Theorem 6.8)

 

Click on a link below to start doing the chapter.

Serial order wise

Ex 6.1 Start Learning
Ex 6.2 Start Learning
Ex 6.3 Start Learning
Examples Start Learning
Theorems Start Learning
Case Based Questions (MCQ) Start Learning
NCERT Exemplar - MCQ Start Learning
Ratio of Area of Similar Triangles Start Learning
Pythagoras Theorem and it's important questions Start Learning
Important questions of Triangle (in Geometry) Start Learning

Concept wise

Similarity Defination Start Learning
Theorem 6.1 Start Learning
Theorem 6.2 Start Learning
SSS Similarity Start Learning
AA Similarity Start Learning
SAS Similarity Start Learning
Given similar, find angles or sides Start Learning
Area of similar triangles Start Learning
Pythagoras Theoram - Finding value Start Learning
Pythagoras Theoram - Proving Start Learning
Theorem 6.7 Start Learning

Why Learn This With Teachoo?

Updated for new NCERT 2024-2025 Edition.

Get NCERT Solutions of Chapter 6 Class 10 Triangles free at teachoo. Solutions to all NCERT Exercise Questions, Examples, Theorems, Optional Exercises are available with Videos of each and every question.

 

We have studied Congruency of Triangles in Class 9.

In this chapter, we will learn

  • What are Similar figures
  • Difference between Congruency and Similarity
  • Basic Proportionality Theorem (BPT) - with Proof (Theorem 6.1)
  • Inverse of Basic Proportionality Theorem - with Proof (Theorem 6.2)
  • AAA (Angle Angle Angle) Similarity i.e. all 3 angles equal, with Proof (Theorem 6.3)
  • Is AA and AAA the same?
  • SSS (Side Side Side) Similarity i.e. all 3 sides in proportion, with Proof (Theorem 6.4)
  • SAS (Side Angle Side) Similarity, i.e. 2 sides in proportion, and 1 angle between them equal - with Proof (Theorem 6.5)
  • Ratios of areas of two similar triangles is equal to square of ratio of their corresponding sides  - with Proof (Theorem 6.6)
  • Theorem 6.7 - If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse then triangles on both sides of the perpendicular are similar to the whole triangle and to each other
  • Pythagoras Theorem Proof (Theorem 6.8)

 

Click on a link below to start doing the chapter.