Across
- 5. these three terms are point, line, and plane
- 6. border or outer boundary
- 7. same order or degree
- 13. in the space separating (two points, objects, etc.
- 14. The path of a point moving in opposite directions infinitely
- 15. It is a straight line that extends from a point.
- 17. Two or more straight coplanar lines that do not intersect.
- 18. when two lines intersect and four angles form
- 19. any particular extent of space or surface
- 22. the point on a line segment or an arc that is equidistant
- 23. one of two opposite and equal angles formed by the intersection of two lines.
- 24. A statement accepted as true without proof
- 26. meeting line or surface
- 32. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
- 33. A pair of angles that add up to 90°.
- 34. angle greater than 90 degrees but less than 180 degrees
- 35. two angles having the same vertex and having a common side between them.
- 37. solid with many faces
- 39. closed solid bounded by a surface on which all points are equidistant from a central point called the center.
- 40. straight line extending from the center of a circle
- 41. lying in the same straight line.
- 43. a line or plane that bisects an angle or line segment.
- 45. Part of a line between two points called endpoints.
- 46. A general conclusion proposed to be proved upon the basis of certain given hypotheses or assumptions
- 47. A point at which the two rays of an angle meet or the intersection point of two sides of a plane figure.
Down
- 1. sharp end
- 2. the outer boundary, especially of a circular area; perimeter
- 3. A planar surface of a solid figure.
- 4. the side of a right triangle
- 8. an angle of 90 degrees
- 9. the space within two lines or three or more planes diverging from a common point, or within two planes diverging from a common line.
- 10. A polyhedron whose one face is a polygon and the other faces are triangles with one common vertex
- 11. A pair of adjacent angles formed by intersecting lines
- 12. being in the same plane
- 16. a polygon such that there is a straight line that cuts it in four or more points
- 20. a polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points
- 21. Two angles that add up to 180°.
- 25. scale of amount
- 27. closed plane figure
- 28. A line segment that passes through the center of a circle and has its two endpoints on the circle.
- 29. a solid whose surface is generated by a line passing through a fixed point and a fixed plane curve not containing the point, consisting of two equal sections joined at a vertex.
- 30. two rays with a common end point that point in opposite directions
- 31. They are straight lines that are neither parallel, nor intersecting. They lie in different planes.
- 32. flat or level surface
- 35. An angle whose measure is between 0° and 90°. Compare obtuse angle.
- 36. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
- 37. A space figure with two parallel polygonal bases that are the same shape and the same size.
- 38. border at which a surface terminates
- 42. coinciding at all points when superimposed
- 44. A can-shaped solid figure.