Classifying Triangles

A triangle is a three-sided polygon.

1. Equilateral Triangle: All sides are equal. 2. Isosceles Triangle: Two sides are equal. 3. Scalene Triangle: No sides are equal.

1. Acute Triangle: All angles are less than 90 degrees. 2. Right Triangle: One angle is exactly 90 degrees. 3. Obtuse Triangle: One angle is greater than 90 degrees.

An equilateral triangle has all three sides of equal length and all three angles equal to 60 degrees.

An isosceles triangle has at least two sides that are equal in length and the angles opposite those sides are equal.

A scalene triangle has all sides of different lengths and all angles of different measures.

A right triangle is a triangle that has one angle measuring exactly 90 degrees.

An acute triangle is a triangle where all three angles are less than 90 degrees.

An obtuse triangle is a triangle that has one angle greater than 90 degrees.

It is a right triangle.