Question

what i have learnt in the triangle and its property .​

Answer 1

Answer:

The triangle is a polygon that has three angles. So, when does a closed figure has three angles?

When it has three line segments joined end to end.

Thus, we can say that a triangle is a polygon, which has three sides, three angles, three vertices and the sum of all three angles of any triangle equals 180°.

These are the properties of a triangle:

A triangle has three sides, three angles, and three vertices.

The sum of all internal angles of a triangle is always equal to 180°. This is called the angle sum property of a triangle.

The sum of the length of any two sides of a triangle is greater than the length of the third side.

The side opposite to the largest angle of a triangle is the largest side.

Any exterior angle of the triangle is equal to the sum of its interior opposite angles. This is called the exterior angle property of a triangle.

Answer 2

I have learnt in this chapter that sum of all Internal angle is 180°