Geometric Puzzle

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Across
  1. 3. a polygon with 10 sides
  2. 4. measures the distance between two points
  3. 5. it is the amount if space
  4. 7. a quadrilateral with exactly one pair of opposite sides parallel
  5. 9. an angle that measures 91° to 179°
  6. 12. lines that do not intersect
  7. 15. type of polygon that contains points in the exterior
  8. 16. the segment joining the midpoints of the legs of a trapezoid
  9. 18. an angle that measures 181° to 359°
  10. 20. sum of all the sides
  11. 21. _____ is formed by two rays sharing a common endpoint
  12. 23. all angles are congruent
  13. 25. a polygon that contains points in the interior
  14. 26. perpendicular distance from the base to the top
  15. 27. congruent sides also knows as ____ sides
  16. 29. an angle that measures exactly 90°
  17. 32. how many sides does hexagon have?
  18. 35. a statement that needs to be proven before being accepted
  19. 36. a closed plane figure consisting of four line segments or sides
  20. 38. what type of triangle has two equal sides?
  21. 40. a parallelogram with four right angles
  22. 42. measures the space between two intersecting lines
  23. 43. property that allows it to remain unchanged when folded, reflected, or rotated
  24. 45. an angle that measures 1° to 89°
  25. 46. _____ polygon is always convex
  26. 47. suffix that is used to the names of polygons based on the number of sides
Down
  1. 1. same sides and angles
  2. 2. line where two faces of a solid shape meet
  3. 4. a line that has two endpoints and a fixed length
  4. 6. two nonadjacent angles formed by two intersecting lines
  5. 8. a parallelogram with all four sides congruent
  6. 9. an angle that is also known as vertical angles
  7. 10. a flat, two-dimensional surface in geometry
  8. 11. two lines, segments, or planes that intersect at a 90° angle
  9. 13. set of all points in geometry called
  10. 14. two angles whose sum of the measures is 180°
  11. 17. how many sides does an octagon have?
  12. 19. an angle that measures exactly 0°
  13. 22. the straight edges of a polygon
  14. 24. two angles sharing a common side and vertex but no interior points in common
  15. 25. also known as a vertex
  16. 28. a quadrilateral with two pairs of congruent and adjacent sides
  17. 30. number of sides in decagon
  18. 31. two angles whose sum of the measures is 90°
  19. 33. two related items in geometry
  20. 34. study of figures in a plane or on a space
  21. 37. a line segment joining two nonconsecutive vertices of a polygon
  22. 39. a closed and two-dimensional shape
  23. 41. point where two or more lines, edges, or rays meet
  24. 44. a polygon with 8 sides