Ch.7 Words to Know

3. The area A of a triangle is one-half the product of its base b and its height h.
8. A two-dimensional representation of a solid
11. A solid whose faces are all polygons.
12. The product of the area of the base and the height of the prism.
13. Surface area is measured in _______ _______.
15. Volume is measured in _____ _____.
16. A prism with rectangular bases.
18. A three-dimensional figure is a measure of the amount of space that it occupies.
20. A quadrilateral that has two pairs of adjacent sides with the same length and opposite sides with different lengths.
21. To find the area of a composite figure, separate it into figures with areas you know how to find.
23. A polyhedron that has one base. The lateral faces are triangles.
25. A line segment where two faces intersect.
26. A polyhedron that has two parallel, identical bases. The lateral faces are parallelograms.

1. Formula used when multiplying length times width.
2. The area A of a trapezoid is one-half the product of its height h and the sum of its bases b1 and b2.
4. Amount of surface it covers.
5. The area A of a parallelogram is the product of its base b and its height h.
6. A point where three or more edges intersect.
7. A pyramid with a triangular base.
9. A closed figure in a plane that is made up of three or more line segments that intersect only at their endpoints.
10. A solid is the sum of the areas of all of its faces.
14. A prism with triangular bases.
17. A pyramid with a square base.
19. Made up of triangles, squares, rectangles, and other two-dimensional figures.
22. A flat surface of a polyhedron.
24. A three-dimensional figure that encloses a space.