Classify Triangles by Angles Only

Front

What are the three main types of triangles classified by angles?

Back

Acute, Right, and Obtuse.

Front

What defines an acute triangle?

Back

An acute triangle has all three angles measuring less than 90 degrees.

Front

What defines a right triangle?

Back

A right triangle has one angle that measures exactly 90 degrees.

Front

What defines an obtuse triangle?

Back

An obtuse triangle has one angle that measures more than 90 degrees.

Front

How can you identify a right triangle?

Back

A right triangle can be identified by the presence of a right angle (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

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

Back

It is a right triangle.

Front

Can a triangle be both acute and right?

Back

No, a triangle cannot be both acute and right; they are mutually exclusive.

Front

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

Back

An acute triangle.

Front

What type of triangle has one angle measuring more than 90 degrees?

Back

An obtuse triangle.