Bellwork # HW, red pen, book on desk.. Space Figures Lesson 10-4 p.521

Bellwork #HW, red pen, book on desk.

Space Figures

Lesson 10-4 p.521

Space Figures

A space figure is a 3-dimensional figure. We commonly think of cubes, prisms, and spheres and cylinders.

Rectangular prism Triangular prism

Space figures

Cylinder Square prism (cube)

Space figuresTo name a space figure, we first look at the

shape of the base. There are two of them. If the base is a square, the space figure is a

square prism. If the base is a triangle, the space figure is a

triangular prism, If the base is a circle, the space is a cylinder.

Try This

Name the following space figures:

Try This

Name the following space figures:

Triangular Prism

Try This

Name the figure:

Try This

Name the figure:

Cylinder

Try This

Name the figure:

Try This

Name the figure:

Trapezoidal prism

Space Figures and Nets

If you could take a space figure such as a square prism, and take it apart so that is lies flat, you would have a shape called a net

For example:

This is a square prism. . .

Nets

And here is one way to draw the net:

Nets

Here is a triangular prism:

Nets

Here is a triangular prism:

And below is the net:

Notice the triangles are the bases

Try This

Draw the net for this figure:

Try This

The blue rectangles are the bases.

Try This

Draw the net for this cylinder:

Try This

Draw the net for this cylinder:

It is important to see that a cylinder is 2 circles and a rectangle.

3-21-11

You have a few minutes to study for the Bellwork Quiz.

3-21-11

PA#41Pp.523-524 #8-18, 29-34