Classifying Triangles Review

Front

What is a right angle?

Back

A right angle measures exactly 90°.

Front

What is an obtuse triangle?

Back

An obtuse triangle has only one obtuse angle.

Front

What is an acute triangle?

Back

An acute triangle has all angles measuring less than 90°.

Front

What is an isosceles triangle?

Back

An isosceles triangle has at least two sides that are equal in length.

Front

What is a scalene triangle?

Back

A scalene triangle has all sides of different lengths.

Front

What is an acute angle?

Back

An angle that measures between 0 and 90°.

Front

What is an obtuse angle?

Back

An angle that measures more than 90° and less than 180°.

Front

What is a straight angle?

Back

A straight angle measures exactly 180°.

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

How do you classify triangles by angles?

Back

Triangles can be classified as acute, right, or obtuse based on their angles.