Classifying Triangles by Angles

Front

What type of triangle has all angles less than 90 degrees?

Back

Acute Triangle

Front

What type of triangle has one angle that is exactly 90 degrees?

Back

Right Triangle

Front

What type of triangle has one angle that is greater than 90 degrees?

Back

Obtuse Triangle

Front

A right triangle is...

Back

a triangle with a 90 degree angle.

Front

An acute triangle is...

Back

a triangle where all angles are less than 90 degrees.

Front

An obtuse triangle is...

Back

a triangle with one angle larger than 90 degrees.

Front

What is the sum of the angles in any triangle?

Back

180 degrees.

Front

If one angle in a triangle is 90 degrees, what type of triangle is it?

Back

Right Triangle.

Front

If all angles in a triangle are equal, what type of triangle is it?

Back

Equilateral Triangle.

Front

What is the definition of a scalene triangle?

Back

A triangle with all sides of different lengths.