Classifying Triangles

Front

What is an Isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is an Equilateral triangle?

Back

A triangle with all three sides of equal length.

Front

What is a Scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is an Acute angle?

Back

An angle that is less than 90 degrees.

Front

What is a Right angle?

Back

An angle that is exactly 90 degrees.

Front

What is an Obtuse angle?

Back

An angle that is greater than 90 degrees but less than 180 degrees.

Front

How do you identify an Obtuse Isosceles triangle?

Back

It has two equal sides and one angle that is greater than 90 degrees.

Front

How do you identify an Acute Isosceles triangle?

Back

It has two equal sides and all angles less than 90 degrees.

Front

How do you identify a Scalene triangle?

Back

It has all sides of different lengths and no equal angles.

Front

What is the sum of the angles in any triangle?

Back

180 degrees.