Types of 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 equal to 90 degrees.

Front

What is an obtuse triangle?

Back

A triangle where one angle is greater than 90 degrees.

Front

How can you identify an acute triangle?

Back

By checking that all angles are less than 90 degrees.

Front

How can you identify a right triangle?

Back

By finding one angle that is exactly 90 degrees.

Front

How can you identify an obtuse triangle?

Back

By finding one angle that is greater than 90 degrees.

Front

If a triangle has angles measuring 30°, 60°, and 90°, what type of triangle is it?

Back

Right triangle.

Front

If a triangle has angles measuring 45°, 45°, and 90°, what type of triangle is it?

Back

Right triangle.

Front

If a triangle has angles measuring 70°, 60°, and 50°, what type of triangle is it?

Back

Acute triangle.

Front

If a triangle has angles measuring 120°, 30°, and 30°, what type of triangle is it?

Back

Obtuse triangle.