Pete is an artist. He likes to design art using these shapes. Look at these shapes. What do they all have in common?
Did you notice that all of these shapes have straight sides. These shapes also have angles.

Did you also notice that these shapes are also closed shapes? That means that their beginning and ending points meet.

Look at the figures on the next screen. Decide if they are closed figures or open figures. Click on all objects that are closed figures. Remember that closed figures have a beginning and an ending point that meet.

Select the Polygons

Shapes that have straight sides, angles, and that are closed, are called
polygons
.

This shape is a polygon. It is called a triangle. It has 3 straight sides and 3 angles. The shape is closed.
Click on all triangles.

A square is a polygon that has 4 straight sides that are all the same length. A square also has 4 angles that are all the same size.
Click on all squares.

A rectangle is a polygon that has 4 straight sides and 4 angles. The two sides opposite each other are the same length.
Click on all rectangles.

A pentagon is a polygon that has 5 sides and 5 angles.
Click on all pentagons.

A hexagon is a polygon that has 6 sides and 6 angles.
Click on all hexagons.

Can a circle be a polygon?
Answer yes or no and then explain your answer in the box.
Yes
No
Remember what you have learned about polygons.

Now that you know that a polygon is a closed figure with straight sides and angles see if you can identify the shapes in the everyday objects on the next screen.

rectangle
square
pentagon
hexagon
triangle
rectangle
square
pentagon
hexagon
triangle
rectangle
square
pentagon
hexagon
triangle
rectangle
square
pentagon
hexagon
triangle
rectangle
square
pentagon
hexagon
triangle
Select the letter that goes with the shape.

Now that you have helped Pete understand what polygons are and their names, get a piece of paper and draw a picture using only the polygon shapes you have just learned about. Label all of the different shapes you use in your drawing. Include a triangle, a square, a pentagon, a hexagon, and a rectangle.
