## Right Isosceles Triangle

- One side of a right isosceles triangle is 90° and two angles are equal.

## Right Triangle

- One side of a right triangle is 90°, the other two angles are unequal and no sides are equal.

## Equilateral Triangle

- An equilateral triangle is when all three angles are equal.
- A equilateral triangle is a polygon.

## Isosceles Triangle

- An isosceles triangle is when two sides are equal and two angles are equal.

## Acute Triangle

- An acute triangle is when all three angles of the triangle are less than right angles.
- An acute triangle is a oblique triangle.

## Obtuse Triangle

- An obtuse triangle is when one of the three angles is greater than a right angle.
- An obtuse triangle is a oblique triangle.

## Scalene Triangle

- An scalene triangle is when no sides and angles are equal.