Class 9 maths I Triangles: definition and its figures I parts of triangle I easy learning I Part- #1

Triangles: CBSE maths class 9.
definition and its figures.
parts of triangle -
vertices, sides and angles.
types of triangles on basis of sides-
equilateral triangle, isosceles triangle,
scalene triangle.
types of triangles on basis of angles-
right-angled triangle, acute-angled triangle,
obtuse-angled triangle.
special type- isosceles right-angled triangle.