I am so sorry! I thought this had already posted. Here are the links to the videos we watched on Friday and Monday. You really only need to know the names of the Platonic Solids. The video is 17 minutes long, but you really just need the names....
Here is a picture of the platonic solids: tetrahedron, hexahedron (cube), octohedron, Dodecahedron, Icosohedron
For Cross Sections (from Monday)
For Platonic Solids (Friday) The names are
Answers to the review
1 and 16. You really only need to know rectangle, triangle, trapezoid
2. A pyramid is not curved, so you can't get a curved 2D shape.
3. parabola, triangle, circle
4. hexagonal prism
6. parallelograms/rectangles/squares. You cannot assume they are squares or rectangles. They are parallelograms.
7. rectangular pyramid
8. 1, rectangle
9. 4, triangles
10. A face of a 3D figure that connects the two bases (in a prism) or a base and an apex point (in a pyramid). They are the "sides."
11. 9 cubes
12. 7 cubes. One could float/attach to the side of another cube.
13. Right prism means that you will have rectangles as the lateral faces. The axis is perpendicular to the base.
14. 4 right angles in a rectangle so 4x 5 = 20
15. mad, crazy, happy
16. see #1
17. Remember, odd number of vertices means it is a pyramid. 5-1apex point leaves 4 vertices, so rectangular pyramid.
18. see #14