Part 4
Can you position the points to create a surface consisting of 2 parts? Try to do so.
Can you position the points to create a surface consisting of 3 parts? Try to do so.
Which of the following 3D surfaces cannot be formed by rotating a 2D figure about a line?
The 2D figure you saw on the left side is called the CROSS SECTION. The 3D surface on the right is said to be a SURFACE OF REVOLUTION. What was common about the cross section of a CYLINDER and cross section of a CONE?
What was different about the cross section of a CYLINDER and cross section of a CONE?