A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted.
An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
There are 5 main types of triangles. They are right triangle,equilateral triangle,isosceles triangle,obtuse triangle and acute triangle.
A right angled triangle in which one angle measures 90 degrees and other two angles are less than 90 degrees.
A acute angled triangle is a triangle which consists of three acute angles. It means that all the angles are less than 90 degrees
A Obtuse angled Triange is a triangle in which one angle measures above 90 degrees and the other two angles measures less than 90 degrees.