Sorting Polygons by Angle Types

This lesson teaches how to sort polygons into categories by observing their angles. It begins with definitions of polygons and angles, followed by a classification of polygons based on angle types such as right, obtuse, and acute angles. The lesson provides examples of different polygons and their angle types, and concludes with real-world examples of angles in objects like schools, textbooks, and stop signs.

What is a polygon?

• A shape with no angles

• A figure with only one endpoint

• A closed plane figure made of line segments

• A figure with curved lines

Which of the following is NOT a type of angle?

• Acute angle

• Obtuse angle

• Right angle

• Curved angle

How would you classify a square based on its angles?

• Right and obtuse angles

• Only obtuse angles

• Only right angles

• Only acute angles

Which polygon has both acute and obtuse angles?

• Square

• Octagon

• Right triangle

• Rhombus

What types of angles are found in a stop sign?

• Acute and obtuse angles

• Only obtuse angles

• Right and acute angles

• Only right angles