Across
- 3. suggest or assume the existence, fact, or truth of (something) as a basis for reasoning, discussion, or belief
- 7. this is a line on which points do not lie on one line
- 8. a quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.
- 9. the point or place where something begins, arises, or is derived
- 10. given, felt, or done in return
- 11. a flat surface on which a straight line joining any two points on it would wholly lie
- 13. a surface of which one end or side is at a higher level than another; a rising or falling surface
- 14. a completely different line of thought or action
- 16. pair, a pair of elements a, b having the property that (a, b) = (u, v) if and only if a = u, b = v
- 17. a plane figure with eight straight sides and eight angles.
- 18. side by side and having the same distance continuously between them
- 20. matrix, something that constitutes the place or point from which something else originates, takes form, or develops
- 21. a unit of angle, equal to an angle at the center of a circle whose arc is equal in length to the radius
- 22. a round solid figure, or its surface, with every point on its surface equidistant from its center
Down
- 1. a plane figure with five straight sides and five angles
- 2. a way, especially one of several possible variations, in which a set or number of things can be ordered or arranged:
- 3. at an angle of 90° to a given line, plane, or surface
- 4. an imaginary line about which a body rotates
- 5. directly opposite in character or tendency
- 6. in the same plane
- 10. the action or fact of making a specified thing smaller or less in amount, degree, or size
- 12. is a transformed irritated or changed image
- 15. evidence or argument establishing or helping to establish a fact or the truth of a statement
- 19. of or relating to the root of something, in particular
- 23. of first importance; main