Properties of Triangles

A triangle is defined as a shape with three sides (and by default 3 angles). In a triangle all three angles add to $180 \degree$. There are 4 main types of triangle, these are:

Key Triangle Properties:

• Interior angles in a triangle add up to $180 \degree$.

• Isosceles Triangle: Two angles are equal.

• Equilateral Triangle: All three angles are $60 \degree$.

• Right-Angled Triangle: Contains a $90 \degree$ angle.

• Scalene Triangle: No equal sides or angles.