1. PIB Geometry 12-2: Pyramids

2. 12-2 Warm Up Find the volume and total surface area of a right regular octagonal prism with sidelength = 3 lightyears and height = 8 lightyears.

3. 12-1 Questions?

4. Formulas so far:

5. 12-2: Pyramids - Objectives Identify the parts of a pyramid Solve problems involving lateral area, total area, and volume of pyramids.

6. Pyramids! A pyramid is a polyhedron formed by connecting a polygonal base to a point (the vertex) with triangular lateral faces.

7. Pyramid Formulas Surface Area: Volume: http://www.geogebratube.org/student/m64287

8. Examples A regular square pyramid has base length 6 m and lateral edge 5 m. Complete the table. Slant height Lateral area Base area Total area Length of altitude Volume

9. Find the volume and total surface area.

10. Find volume of a regular hexagonal pyramid with lateral edges 10 ft and base edge 6 ft.

11. 12-2 Homework p. 485: #1-19 odd, 16, 18, 26 12.1-12.3 Quiz BLOCK