Across
- 2. Three or more points are __________ if and only if they line on the same plane.
- 8. a solid with two parallel congruent circular bases connected by a curved surface
- 9. the set of all points extending in all directions in three dimensions
- 10. a single polygonal base connected by triangular faces to a common vertex
- 11. two rays joined at a common point that extend in opposite directions, forming a straight line
- 12. two noncollinear rays that share a common endpoint
- 14. the set of points common to two or more geometric figures
- 15. the measure of space occupied by a solid measured in cubic units
- 16. two angles whose measures add to 90 degrees
- 17. a unit of angle measurement equal to 1/360 rotations of a circle
- 18. the set of all points in space that are the same distance from a center point with no faces, edges, or vertices
- 20. a polyhedron with two parallel congruent faces connected by parallelogram faces
- 22. a line or plane that intersects a segment at its midpoint
- 23. a polygonal flat surface on a polyhedron
- 28. a term that has no formal definition, is only explained with descriptions and examples
- 30. a polygon whose side and angles are all congruent
- 33. the number of square units needed to cover a surface
- 35. Two or more points are ____________ if and only if they lie on the same line.
- 37. one line segment on a polygon
- 38. a polygon who's angles are all congruent
- 40. a closed figure formed by coplanar line segments called sides that intersect exactly two other sides but only at their endpoints
- 44. the set of points extending in two directions to infinity
- 45. a regular polyhedron - all faces are congruent polygons and all edges are congruent
- 47. inside a polygon
- 48. the distance around a geometric figure
- 49. a technique of producing geometric figures using various tools without measurement, usually a compass and straightedge
- 50. a polygon with n number of sides
- 52. a solid with all flat surfaces that enclose a single region of space
Down
- 1. two angles with a common side
- 3. the Platonic solids
- 4. the common endpoint of two rays of an angle or two sides of a polygon or three or more edges of a polyhedron
- 5. an angle that measures between 90 and 180 degrees
- 6. polygon a polygon whose sides are all congruent
- 7. the distance around a circle
- 9. two angles whose measures add to 180 degrees
- 12. a ray that divides an angle into two adjacent congruent angles
- 13. the opposite of concave
- 17. the length of a segment connecting two points
- 19. the point that lies halfway between two endpoints on a line segment
- 21. the sum of the areas of all surfaces of a solid
- 24. the line segment where two faces of a polyhedron intersect
- 25. two nonadjacent angles formed by two intersecting lines
- 26. part of a line that has one endpoint and extends in one direction to infinity
- 27. A polygon is _________ if a line containing any side also contains any point in the interior of the polygon
- 29. a pair of adjacent angles with noncommon sides that are opposite rays
- 31. a location in space with no size or shape
- 32. Two lines are _____________ if and only if their intersection forms right angles
- 34. an angle whose measure is exactly 90 degrees
- 36. a solid with a circular base connected to a vertex by a curved surface
- 38. outside an angle
- 39. part of a line with two endpoints
- 41. M is __________ two points A and B if and only if it is collinear with A and B and AM + MB = AB.
- 42. an angle that measures less than 90 degrees
- 43. a flat surface containing the set of all points extending in two dimensions to infinity
- 46. one of two parallel congruent faces of a polyhedron or a single face of a pyramid connected by triangular faces to a common vertex
- 51. Two geometric figures are _________ if they have the same size and shape.