The Triangle and Its Properties - NCERT Class 7 Maths

The chapter 6 begins with an introduction to triangles and its properties by explaining the elements of the triangle such as three vertices, three sides and three angles.Then the concept of medians and altitudes of a triangle are discussed in detail.Exterior angle of a triangle and its property is dealt in the next section.Similarly, the angle sum property of a triangle is described in the following section.After this, the two special triangles namely equilateral and isosceles are explained in detail.The sum of the lengths of two sides of a triangle is the next topic of discussion. The very important and interesting Right-Angled Triangle and Pythagoras Theorem is explained in the last section.

Exercise 6.1

Exercise 6.2

Exercise 6.3

Exercise 6.4

Exercise 6.5