Geometry: Fall Vocabulary

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Across
  1. 2. A logical Argument written with numbered statements & reasons.
  2. 4. Line (or "part" of a line) that divides an angle or segment into two equal parts.
  3. 6. Three or more points that lie on the same plane.
  4. 9. A pair of angles on opposite sides of a transveral that lie between a pair of lines.
  5. 11. Set of points that extends infinitely in two directions.
  6. 12. An angle whose measure is exactly 180.
  7. 15. Set of points that extends infinitely in all directions.
  8. 17. Statement that is accepted without proof.
  9. 18. The ratio of vertical change to horizontal change.
  10. 19. Coplanar lines that do not intersect.
  11. 20. Triangle with all congruent sides.
  12. 22. Triangle with all angles less than 90.
  13. 24. An example that proves a given statement false.
  14. 25. Negation of a conditional: ~p -> ~q.
  15. 28. Triangle with one 90 degree angle.
  16. 31. Two coplanar angles with a common side, common vertex, and no common interior points.
  17. 32. Points that lie on the same line.
  18. 35. Flipping a conditional: q -> p.
  19. 38. Side opposite the right angle in a right triangle.
  20. 39. Part of a line consisting of two endpoints and all the points between them.
  21. 40. An angle whose measure is between 90 & 180.
  22. 41. Rays that share the same endpoint and form a line.
Down
  1. 1. An equilateral & equiangular polygon.
  2. 3. Lines that intersect to form right angles.
  3. 5. An "if-then" statement p -> q.
  4. 7. A geometric figure with no measurable size and shape.
  5. 8. Two angles that contain the base of an isosceles triangle.
  6. 10. Line that intersects two other lines.
  7. 13. An angle whose measure is between 0 & 90.
  8. 14. Statement that must be proven.
  9. 16. Part of an "if-then" statement that follows the "then".
  10. 18. Two angles whose sum is 180.
  11. 21. Two angles whose sides are opposite rays.
  12. 23. Triangle with all congruent angles.
  13. 26. Part of a line consisting of one endpoint and all points extending infinitely in one direction.
  14. 27. Point that divides a segment into two congruent segments.
  15. 29. An angle whose measure is exactly 90.
  16. 30. Triangle with no congruent sides.
  17. 33. Triangle with one angle greater than 90.
  18. 34. Two angles whose sum is 90.
  19. 36. Figures with the same shape and size.
  20. 37. Triangle with at least two congruent sides.