Each angle inside an equilateral triangle is equal.

Each of the angles inside an equilateral triangle are equal. Since the angles in a triangle add up to $180\degree$, each angle is $\frac{180}{3}$.

An isosceles triangle has two sides and angles that are equal.

Not quite! This is the case in an equilateral triangle. An isosceles triangle has two sides and angles that are equal.

Triangles can be classified according to characteristics of their sides and angles, as isosceles, scalene or equilateral triangles.

Types of Triangles

Interior Angles of Polygons

Exterior Angles of Polygons

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