Question

What is a Triangle ? Define the types of
triangles with reference to its sides and
angles. Also draw a triangle of each type​

Answer 1

Answer:

A triangle is a closed figure made of 3 line segments.

It has 3 sides, 3 vertices and 3 angles.

The sum of two sides is always Greater than the third side.

The sum of all angles is 180°.

There are 3 types of triangle on the basis of sides.

• Scalene triangle = All the sides are of unequal length.
• Isosceles triangle = Two sides are of equal length.
• Equilateral triangle = All the three angles are of equal length.

There are 3 types of triangle on the basis of angles.

• Acute angled triangle = The angles should be less than 90°.
• Right angled triangle = One of the angle is 90°.
• Obtuse angled triangle = One of the angle should be more than 90°.

Answer 2

Answer:

a triangle having all three unequal sides is called a Scalene triangle