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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