Classifying Triangles

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90 degrees.

Front

What is a right triangle?

Back

A triangle that has one angle exactly equal to 90 degrees.

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

What is an isosceles triangle?

Back

A triangle that has at least two sides of equal length.

Front

What is a scalene triangle?

Back

A triangle where all three sides are of different lengths.

Front

What is an equilateral triangle?

Back

A triangle where all three sides are of equal length and all angles are 60 degrees.

Front

How can you identify an acute isosceles triangle?

Back

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

Front

How can you identify an obtuse scalene triangle?

Back

It has no equal sides and one angle is greater than 90 degrees.

Front

What is the sum of the angles in any triangle?

Back

The sum of the angles in any triangle is always 180 degrees.

Front

What type of triangle has one angle that is 90 degrees and two sides of different lengths?

Back

Right Scalene Triangle.