Classifying Triangles

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Front

What are the types of triangles based on side lengths?

Back

1. Equilateral: All sides are equal. 2. Isosceles: Two sides are equal. 3. Scalene: All sides are different.

Front

What are the types of triangles based on angles?

Back

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

Front

What is an Equilateral Triangle?

Back

A triangle with all three sides and all three angles equal (each angle is 60 degrees).

Front

What is an Isosceles Triangle?

Back

A triangle with at least two sides equal and the angles opposite those sides are equal.

Front

What is a Scalene Triangle?

Back

A triangle with all sides and all angles different.

Front

What is a Right Triangle?

Back

A triangle that has one angle measuring exactly 90 degrees.

Front

What is an Obtuse Triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

How can you identify an Equilateral Triangle?

Back

By checking if all three sides are equal in length.

Front

How can you identify an Isosceles Triangle?

Back

By checking if at least two sides are equal in length.