Geometry Vocabulary

2. A flat surface on a solid, three-dimensional figure.
6. A three-dimensional figure with a flat base and all other faces coming to a point opposite the base.
7. The outside border of a closed figure.
10. The amount of space inside a three-dimensional figure.
13. The total area of all faces of a three-dimensional figure.
15. An equation that is an established way to calculate something.
16. The two dimensional face that is revealed when a three-dimensional figure is sliced in a certain direction.
17. The distance from one side of the circumference, through the center, to the other side of the circumference of a circle.

1. Two or more angles that have a sum of 180* are considered ______ angles.
3. Angles Angles that are next to each other and share a common side.
4. The space inside a two-dimensional figure, measured using unit squares.
5. Two or more angles that have a sum of 90* are considered _____ angles.
8. The outside border (perimeter) of a circle.
9. Three-dimensional figure with two flat bases opposite one another.
11. Angles Two angles, formed by intersecting lines, that are across from each other and also have equal measures.
12. The distance between the center of a circle and any point on the circumference of a circle.
14. Equivalent geometric figures.