Classifying Triangles

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Front

What are the types of triangles based on angles?

Back

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.

Front

What are the types of triangles based on sides?

Back

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

Front

What is an Isosceles Triangle?

Back

An Isosceles Triangle has at least two sides that are equal in length.

Front

What is a Scalene Triangle?

Back

A Scalene Triangle has all sides of different lengths.

Front

What is a Right Triangle?

Back

A Right Triangle has one angle that measures exactly 90 degrees.

Front

What is an Acute Triangle?

Back

An Acute Triangle has all angles measuring less than 90 degrees.

Front

What is an Obtuse Triangle?

Back

An Obtuse Triangle has one angle that measures more than 90 degrees.

Front

What is a Right Isosceles Triangle?

Back

A Right Isosceles Triangle has one right angle and two equal sides.

Front

What is an Acute Isosceles Triangle?

Back

An Acute Isosceles Triangle has all angles less than 90 degrees and two equal sides.