1. Cross Sections
SWBAT: Describe the two-dimensional figures that result from slicing three-dimensional figures, as in plane sections of right rectangular prisms, right rectangular pyramids, cylinders, cones, and spheres.

2. In a prism, and at times in cylinders the shape is made by stacking several figures on top of each other that are ________________ .
If you stacked the same shape as the base, except that it is a little smaller
each time until they reached a point at the top, you will create what is known as a______________.
These pyramids are named according to the shape of their_________________
When we think of pyramids we think of the Great Pyramids of Egypt. They are actually Square Pyramids, because their base is a Square. 
Similar
Pyramid
Base

3. Cross Sections
A slice of any 3 dimensional figure with a plane creates a __________
Cross sections are either taken ______________ or ____________ to the base, but they can also be taken at a_____________.   
Cross Section
Parallel
Perpendicular
Diagonal

4. Types of Cross Sections:
If a shape is cut parallel, then the cross section looks just like the base. (Think a stack of cheese or a stack of CDs)
If a shape is cut perpendicular to the base, then the cross section looks just like the lateral face.
If the shape is cut diagonally, the cross section looks like a stretched out base.

5. Parallel Cross Section
Same Shape as the base
base
base
Cross Section
Cross Section

6. Perpendicular Cross Section
Same shape as lateral face

7. Cross Sections of a Cylinder:
Parallel cut Perpendicular cut

8. Cross Section of a Rectangular Pyramid

9. Cross Section of a Triangular Prism

10. Cross Section of a Hexagonal/Pentagonal Prism

11. Cross Sections of a Cone

12. Cross Sections of a Sphere

13. Draw the 2-D Cross section for each 3-D Figure
Shape
Vertical Cross Section
Horizontal Cross Section
Diagonal Cross Section

14. Shape
Vertical Cross Section
Horizontal Cross Section
Diagonal Cross Section