0Triangle is a simple closed figure made up of three line segments. Let three non-colinear points A, B and C, On joining them, we get a triangle.
Classification of triangle
Based on sides
- scalene triangle
all sides unequal - isosceles triangle two sides equal
equilateral triangle all sides are equal
based on angle
- acute-angled: all angles are acute < 90
- right angle triangle: one angle is 90
- obtuse-angled triangle: one angle is obtuse.
