The document discusses different types of triangles classified based on their sides and angles. There are three types of triangles based on sides: equilateral (all three sides are equal), isosceles (two sides are equal), and scalene (no sides are equal). Based on angles, triangles are: acute (all angles less than 90 degrees), obtuse (one angle greater than 90 degrees), or right (one angle is 90 degrees). The document provides details on defining characteristics of each triangle type.

3.  WHAT IS TRIANGLE
 TYPES OF TRIANGLES
1. ON THE BASIS OF THEIR SIDES
 EQUILATERAL TRIANGLE
 ISOSCELES TRIANGLE
 SCALENE TRIANGLE
2. ON THE BASIS OF THEIR ANGLES
 ACUTE ANGLE
 OBTUSE ANGLE
 RIGHT ANGLE

4. WHAT IS TRIANGLE
A triangle is a 3-sided polygon. Every triangle
has three sides and three sides and three
angles. When added together, the three angles
equal 180 degree.

5. ON THE BASIS OF
THEIR SIDES
ON THE BASIS OF
THEIR ANGLES
TRIANGLES
EQUILATERAL ISOSCELES SCALENE RIGHT ACUTE OBTUSE

6. Classification Of Triangles
On The Basis Of Their
Sides

7. Types of triangle
 Equilateral triangle
 Isosceles triangle
 Scalene triangle

8. Equilateral triangles
All sides are equal in length
all interior angles are same

10. Isosceles triangle
Two sides are equal length
Two interior angle are same

12. Scalene triangle
No side of equal length
All interior angles are different

14. Classification Of Triangles
On The Basis Of Their
Angles

16. ACUTE ANGLE TRIANGLE
An angle whose measure is greater than
zero degrees and less than 90 degrees

17. Obtuse Angle Triangle
An obtuse triangle is a triangle in which one of
the angle is greater than 90 degrees.

18. RIGHT ANGLE TRIANGLE
Angle that measures 90 degrees.

19. 1.
2.
3.

20. 4.
5.
6.

21. YOU GOT IT RIGHT
1) Acute angle triangle
2) Obtuse angle triangle
3) Right angle triangle
5) Equilateral triangles
6) Scalene triangle

22. REFERENCE
 From N.C.R.T
 From Internet
 From Google