Across
- 2. non-coplanar lines that do not intersect.
- 4. lying in the same straight line
- 5. lying in the same plane
- 8. A set of lines in Euclidean geometry that never meet or intersect however far extended. For lines A and B this relationship is written A || B.
- 10. A set of objects having identical size and shape so that they may be exactly superimposed.
Down
- 1. A set of lines in Euclidean geometry that intersect to form a right angle.
- 3. A geometric element having no dimensions and can be located by a single n-tuple of coordinates.
- 6. A flat two-dimensional surface that extends indefinitely. A geometric figure for which the line joining any two of its points lies completely on the surface.
- 7. A half-infinite line extending from a point.
- 9. A straight one-dimensional geometric figure of infinite length and no thickness that can be determined by two unique points.