Classify Triangles

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles are less than 90 degrees.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle with all sides of different lengths.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater than 90 degrees.

Front

What is a right triangle?

Back

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

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle with at least two sides of equal length.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are of equal length.

Front

What type of angle is less than 90 degrees?

Back

An acute angle.

Front

What type of angle is exactly 90 degrees?

Back

A right angle.

Front

What type of angle is greater than 90 degrees?

Back

An obtuse angle.

Front

If a triangle has sides of lengths 5 cm, 5 cm, and 8 cm, what type of triangle is it?

Back

It is an isosceles triangle.