TRIANGLES ITS PROPERTIES AND TYPES Properties of triangle, types of triangle, median, centroid, incentre orthocentre of triangle, circumcentre Triangle:- A polygon with three sides is called a triangle. Triangle is a closed figure which have three sides, three angles and three vertices. Classification of triangles on the bases of sides These are of three types:- Scalene Triangle Isosceles Triangle Equilateral triangle Scalene Triangle:- A triangle whose all sides are different is called a scalene triangle. Isosceles Triangle:- A triangle whose two sides are equal is called isosceles triangle. Equilateral Triangle:- A triangle whose all sides are equal is called an equilateral triangle. Classification of triangles on the basis of angles. These are of three types:- Acute angled Triangle Right angled Triangle Obtuse angled Triangle Acute angled triangle:- A triangle whose all angles ar...