Triangles and Angles Practice

Front

What is a Triangle?

Back

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.

Front

What are the types of angles?

Back

The types of angles are Acute (less than 90°), Right (exactly 90°), Obtuse (more than 90° but less than 180°), and Straight (exactly 180°).

Front

What is an Acute Angle?

Back

An angle that measures less than 90°.

Front

What is a Right Angle?

Back

An angle that measures exactly 90°.

Front

What is an Obtuse Angle?

Back

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

Front

What is a Straight Angle?

Back

An angle that measures exactly 180°.

Front

What is a Scalene Triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Front

What is an Isosceles Triangle?

Back

A triangle with at least two sides of equal length and at least two angles of equal measure.

Front

What is an Equilateral Triangle?

Back

A triangle with all three sides of equal length and all three angles measuring 60°.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in any triangle is always 180°.