Triangle and Types of triangle by sides

VI

When three non collinear point are joined. The shape is called a

Triangle.

Triangle

A

B C

Types of Triangle

By sides

P

QR

4m 4m

4m

M

O N

8cm 8cm

8cm

Equilateral Triangle

If the lengths of all what three sides of a triangle are equal, the triangle is called a

Equilateral triangle

L

M N

5cm 5cm

7cm

U

VW

4cm

8cm

4cm

Isosceles Triangle

If the lengths of two sides of a triangle are

equal, then

such a triangle is called Isosceles Triangle.

C

DE

9cm

3cm7cm

W

U

V

11cm

5 cm

7cm

Scalene Triangle

A triangle with all three sides of different lengths is called a Scalene Triangle.

RECAPITULATION

1. What is a Triangle?

2. What is an Equilateral Triangle?

3. What is an Isosceles Triangle?

4. What is difference between Equilateral Triangle and Scalene Triangle?