Types of Triangles

Topic: Geometry

Triangles are classified by sides and angles.

a. By Sides:

Type Description
Equilateral All sides and angles are equal.
Isosceles Two sides and two angles are equal.
Scalene All sides and angles are different.

b. By Angles:

 

Type Description
Acute All angles < 90°
Right One angle = 90°
Obtuse One angle > 90°

Geometry

Basic Mathematics

 What is Geometry? Basic Geometrical Terms Types of Angles Types of Triangles Quadrilaterals (4-sided shapes) Perimeter and Area Area – Space inside a shape 3D Shapes and Volume Lines and Angles Properties Circle Geometry Pythagoras Theorem Geometrical Constructions (Basics) Coordinate Geometry (Basics) Symmetry and Transformations Summary Table