Chapter 9 Vocabulary and Formulas, page 1 of 5
DIRECTIONS
1. DEFINITIONS OR FORMULAS
For each vocabulary term or formula, write out the definition of the term or give the formula. If
you are giving a formula, define your variables (e.g., don't write just A = b x h, write Area = Base
x Height or A = b x h, and define A = area, b = base and h = height).
2. SKETCH
A simple sketch (picture) is required for each term unless specified by: NO PICTURE. For terms
that require a sketch; draw a simple and labeled sketch of the item you are defining.
Recommendation: Don't waste time on fancy graphics
Section 9.3
1.
Space (no picture)
2.
Dihedral Angle
3.
Line Parallel to a Plane
4.
Line Perpendicular to a Plane
5.
Polyhedron (polyhedra) (no picture)
6.
Face of a Polyhedron
7.
Edge of a Polyhedron
8.
Vertex of a Polyhedron
9.
Convex Polyhedron (no picture)
Chapter 9 Vocabulary and Formulas, page 2 of 5
10. Concave Polyhedron (no picture)
11. Regular Polyhedron (no picture)
12. Tetrahedron
13. Cube (Hexahedron)
14. Octahedron
15. Dodecahedron (no picture)
16. Icosahedron (no picture)
17. Semiregular Polyhedron (no picture)
18. Pyramid
19. Base of Pyramid
20. Right Pyramid
21. Oblique Pyramid
Chapter 9 Vocabulary and Formulas, page 3 of 5
22. Prism
23. Base of Prism
24. Right Prism
Chapter 9 Vocabulary and Formulas, page 4 of 5
25. Oblique Prism
26. Cone
27. Vertex of Cone
28. Base of Cone
29. Right Cone
30. Oblique Cone
31. Cylinder
32. Base of Cylinder
33. Right Cylinder
34. Oblique Cylinder
35. Sphere
36. Diameter of a Sphere
37. Radius of a Sphere
Chapter 9 Vocabulary and Formulas, page 5 of 5
38. Hemisphere
39. Great Circle
40. Parallels of Latitude
41. Meridians of Longitude