Geometry: Fall Vocabulary

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