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1. Prism- a solid having bases or ends that are parallel, congruent polygons and sides that are parallelograms. 2. Base- the line or surface forming the part of a figure that is most nearly horizontal or on which it is supposed to stand/ the bottom of a figure 3. Face- any of the bounding surfaces of a solid figure: // a cube has six// // faces. // //4.// Lateral Face- The face or surface of a solid on its sides. That is, any face or surface that is not a base. 5. Edge- A line where two faces meet 6. Surface Area- The total area of the exterior surface of a solid 7. Right Prism- A right prism with bases that are regular polygons. 8. oblique prism-A prism with bases that are not aligned one directly above the other. 9. lateral area-The surface area of the lateral surfaces of a solid. Lateral surface area does not include the area of the base(s). 10. pyramid-A polyhedron with a polygonal base and lateral faces that taper to an apex. A pyramid with a triangular base is called a tetrahedron. 11. regular pyramid-A pyramid with a base that is a regular polygon. The apex is not necessarily directly above the center of the base. 12. vertex of a pyramid-the point where the faces meet 13. altitude of a pyramid- The distance from the apex to the base of a pyramid. Formally, the shortest line segment between the apex of a pyramid and the (possibly extended) base. Altitude also refers to the length of this segment. 14. net-a 3-d figure drawn into a 2-d net Volume formulae: Pyramid: 1/3BH Cylinder: pi times r squared times height Cone: 1/3 pi times r squared times height Sphere: 4/3 pi times the radius cubed Surface Area of a Pyramid: Base + 2bh Surface Area of a Cylinder: 2 pi times radius squared plus 2 pi r times height Surface area of a cone: pi times radius times side height plus pi times radius squared Surface area of a sphere: 4 pi times the radius squared

Shapes: Tetrahedron: 4 edges, 6 vertices, 4 faces Cube: 6 faces, 8 vertices, 12 edges Octahedron: 8 faces, 12 edges, 6 vertices Icosahedron: 20 faces, 30 edges, 12 vertices Dodecahedron: 12 faces, 30 edges, 20 vertices 