Geometry

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Across
  1. 1. the intersection of all three altitudes
  2. 5. a line through the midpoint of a segment that is perpendicular to that segment
  3. 10. a figure formed by three segments joining three noncollinear points
  4. 11. two angles whoes measures have the sum of 180
  5. 13. a quadrilateral with four right angles
  6. 14. a segment from a vertex to the midpoint of the opposite side
  7. 15. a segment joining two non-consecutive vertices of a polygon
  8. 19. (_ triangle) one obtuse angle
  9. 20. a quadrilateral with four congruent sides and four right angles
  10. 22. a polygon such that no extension of a side of the polygon is also a point in the interior of the shape
  11. 23. a geometric object before a transformation has been applied
  12. 26. a statement that is accepted without proof
  13. 28. two angles in a plane that share a common side but no common interior points
  14. 29. a line or ray through the vertex of an angle that divides an angle into two equal angles
  15. 31. a quadrilateral with both pairs of parallen opposite sides
  16. 34. a line segment ray or plane that intersects the midpoint of a segment
  17. 39. (_ triangle) three acute angles
  18. 41. a directed line segment
  19. 43. (_ triangle) all congruent sides
  20. 45. a line that intersects two or more coplanar lines in different points
  21. 48. two objects that have the same size and the same shape
  22. 49. a transformationthat preserves congruence
  23. 50. formed by interchanging the hypothesis and conclusion
  24. 51. a line segment ray or plane that intersects to form a 90 degree angle
Down
  1. 2. two angles whose measures have the sum of 90
  2. 3. the basis of all geometric features no size or shape
  3. 4. a movement that maps a shape to an equal-sized shape
  4. 6. (_ triangle) one right/90 degree angle
  5. 7. the intersection of all three angle bisectors
  6. 8. a quadrilateral with atleast one pair of parallel sides
  7. 9. a geometric figure that extends in two directions without ending
  8. 12. (_ trapezoid) a trapezoid with atleast one pair of congruent base angles
  9. 16. a statement you think is true but have not yet proven
  10. 17. lines in the same plane that never intersect
  11. 18. (_ trianfle) atleast two congruent sides
  12. 21. a quadrilateral with two distinct pairs of congruent adjacent sides
  13. 24. if two angles and the included side of one triangle are congruent to two other angles and the included side of another triangle, then the triangles are congruent
  14. 25. if three sides of one triangle are congruent to three sides of another triangle, then those triangles are congruent
  15. 27. (_ triangle) no congruent sides
  16. 30. the intersection of all three perpendicular bisectors
  17. 32. of two angles and non-included side of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent
  18. 33. lines that arent in the same plane and never intersect
  19. 35. a geometric object after a transformation has been applied
  20. 36. a proven assertion/statement
  21. 37. a quadrilateral with four congruent sides
  22. 38. if two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent
  23. 40. a statement where the conditional and the converse are both true
  24. 42. intersection of all three medians
  25. 44. the perpendicular segment from a vertex to the line that contains the opposite side
  26. 46. a line portion that contains end points
  27. 47. an example that is used to disprovean if-then statement