Question

What is a triangle? Also define with the diagram --
1) Classification of triangle by lengths of its side
2) Classification of triangle by size of its angles.

Can anybody help me please ​

Answer 1

Hey

A closed plane figure having three sides is called triangle.

Classification of triangle by its length of its side

1)all sides are equal(equilateral triangle)

2) two sides are equal(isosceles triangle)

3)all sides are different means no sides are equal(scalene Triangle)

we can also classify triangle by size of angle

1) all angles are equal (equilateral triangle)

2) two angles are equal (isosceles triangle)

3) no angles are equal (scalene Triangle)

4) one angle of a triangle is 90 degree (right angle triangle)