Geometry: Fall Vocabulary

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