geometry extra credit

12345678910111213141516171819202122232425262728293031323334353637383940
Across
  1. 2. turning a figure around a fixed point
  2. 3. states that the points on a line can be matched with real numbers
  3. 6. if a=b and b=c then a=c
  4. 10. a quadrilateral with all sides equal in length
  5. 11. used in proofs after you have already proven the triangles are congruent
  6. 12. a statement formed by swapping the hypothesis and conclusion of a conditional statement
  7. 15. the length between two points
  8. 16. a 3-sided polygon
  9. 17. geometric figure which extends in two directions without ending
  10. 18. a quadrilateral with 4 equal sides and 4 right angles
  11. 19. a quadrilateral with both pairs of opposite sides parallel
  12. 21. having the same shape and size
  13. 23. a quadrilateral with 4 right angles
  14. 26. a set of points that suggest a flat surface
  15. 28. a four-sided polygon
  16. 29. a portion of a line which contains end points and all points between them
  17. 30. geometric object before transformation has been applied
  18. 31. flipping a shape over a line preserving congruence
  19. 32. a statement that is accepted without proof (common sense)
  20. 36. sliding a figure from one place to another without rotating it
  21. 37. a segment from a vertex to the midpoint of the opposite side
  22. 38. if a point M is the midpoint of a line segment AB, then AM=1/2AB and BM=1/2AB
  23. 39. line that divides an angle into 2 equal angles
  24. 40. the basic of all geometric figures with no size or shape
Down
  1. 1. a perpendicular segment from a vertex to the line containing the opposite side
  2. 4. a rule for triangle congruence using 2 angles and the included side
  3. 5. set of coplanar points that are radius distance from the center
  4. 7. two angles that share a common side and vertex
  5. 8. a geometric object after a transformation has been applied
  6. 9. a directed line segment that has a beginning and an end and goes in one direction
  7. 13. a line through the midpoint of a segment that is perpendicular to that segment
  8. 14. if two lines are parallel and intersected by a transversal, then corresponding angles are congruent
  9. 20. part of a line with one endpoint and extends in one direction
  10. 22. lines, rays, or segments that intersect to form 90° angle
  11. 24. if BX is the bisector of ∠ABC, then m∠ABX=1/2m∠ABC and m∠XBC=1/2m∠ABC
  12. 25. a closed figure formed by 3 or more line segments
  13. 27. if 2 angles are supplementary to congruent angles, then they are congruent
  14. 33. a line that intersects two or more lines at distinct points
  15. 34. coplanar lines that never intersect
  16. 35. a point where 2 or more lines, rays, segments meet or intersect