Across
- 3. Two angles whose measures have a sum of 180 degrees.
- 6. A pair of opposite congruent angles formed by intersecting lines.
- 7. Two angles whose measures have a sum of 90 degrees.
- 12. (Two Words) The sum of the areas of the faces or surfaces of a 3-dimensional figure.
- 14. A line segment with one endpoint at the center of a circle and the other endpoint on the outside of the circle.
- 15. A line segment that passes through the center of a circle and whose endpoints lie on the circle.
Down
- 1. The distance around the outside of a circle.
- 2. (Two Words) A 3-dimensional figure whose bases are rectangles and whose other faces are parallelograms.
- 4. A 3-dimensional figure with a polygon base and triangular sides that all meet at a common vertex.
- 5. (Two Words) The 2-dimensional figure formed where a plane intersects a solid.
- 6. The amount of space enclosed within a 3-dimensional region; or the number of cubic units needed to fill that space.
- 8. An arrangement of 2-dimensional figures that can be folded to form a 3-dimensional figure.
- 9. Angles in the same plane that have a common vertex and a common side.
- 10. A face of a 3-dimensional figure by which the figure is measured or classified.
- 11. The ratio of the circumference of a circle to the length of its diameter.
- 13. A 3-dimensional figure with two parallel congruent circular bases connected by a curved lateral surface.