Classifying Triangles

Front

What is an acute triangle?

Back

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

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

What is a right triangle?

Back

A triangle that has one angle equal to 90 degrees.

Front

What is an equilateral triangle?

Back

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

How do you identify an acute isosceles triangle?

Back

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

Front

How do you identify an obtuse isosceles triangle?

Back

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

Front

How do you identify a right isosceles triangle?

Back

It has two equal sides and one angle equal to 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.