Types of Triangles

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Front

What are the three types of triangles based on angles?

Back

Acute, Right, and Obtuse.

Front

Define an acute triangle.

Back

An acute triangle has all angles less than 90 degrees.

Front

Define a right triangle.

Back

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

Front

Define an obtuse triangle.

Back

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

Front

How can you identify an acute triangle?

Back

An acute triangle can be identified by measuring its angles; all should be less than 90 degrees.

Front

How can you identify a right triangle?

Back

A right triangle can be identified by finding one angle that measures exactly 90 degrees.

Front

How can you identify an obtuse triangle?

Back

An obtuse triangle can be identified by finding one angle that measures more 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

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

Back

It is a right triangle.