1. New Solids: Pyramids, Cones, Spheres Challenge Questions Projects and exam area next week! Sites: 1, 2, 3123 Videos (Bubbles is #2): 1, 212

3. Have a polygon for a base Have triangles that join the base to the apex Have some tricky terminology…

4. Height (also known as altitude) is the perpendicular distance between base and apex Slant height is the distance between the apex and the center of the base’s edge

6. Here is the surface area formula: “P” is perimeter of the base “S” is slant height “BA” is area of the base

7. Here is the volume formula: “BA” is area of the base “H” is height (or altitude)

8. Correctly label a pyramid’s apex, base, height, and slant height Find the surface area of a square pyramid Find the volume of a square pyramid (FIRST & SECOND PROBLEM SETS)

10. Have a circle for a base Have an apex Have both height and slant height

11. “In projective geometry, a cylinder is simply a cone whose apex is at infinity, which corresponds visually to a cylinder in perspective appearing to be a cone towards the sky.”

12. Here’s the formula for surface area: “r” is radius of the base “S” is slant height

13. Here’s the formula for volume: “H” is height (or altitude)

14. Correctly label a cone’s apex, base, height, and slant height Find the surface area of a right cone Find the volume of a cone (THIRD PROBLEM SET)

16. Have no tricky terminology… …just a radius

18. Here is the surface area formula: (This formula wierds me out: where did it come from and why is it so simple?)

19. Here is the volume formula: (notice that r is cubed)

20. Find the surface area of a sphere Find the volume of a sphere (FOURTH & FIFTH PROBLEM SETS)

21. Find the volume of combo-objects Surface area to volume ratio of cube and sphere Predict the Mobius strip’s split Old school math