Geometry Vocabulary Project

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Across
  1. 2. a closed plane curve every point of which is equidistant from a fixed point within the curve
  2. 6. a flat surface that extends without end
  3. 7. a polygon of 10 angles and 10 sides
  4. 8. a quadrilateral with all four sides equal and each angle measures 90°
  5. 13. an angle whose measure is exactly 90°
  6. 14. a parallelogram all of whose angles are right angles; especially : one with adjacent sides of unequal length
  7. 17. the distance around a circle
  8. 18. a polygon of four sides that add up to 360°
  9. 20. two lines that intersect to form a right angle
  10. 21. the distance between the center and any point on the circle
  11. 22. Man's best friend
  12. 23. the endpoint of the rays that form an angle
  13. 24. the number of space inside a figure
  14. 26. angles that occupy corresponding positions when a line intersects two other lines
  15. 30. a figure that has one endpoint and extends without end in one direction
  16. 34. a triangle with one right angle
  17. 40. a pair of opposite angles formed when two lines meet at a point
  18. 41. a triangle with three acute angles
  19. 43. an angle greater than 180° but less then 360°
  20. 44. line that intersects a system of lines
  21. 45. a polygon with five sides
  22. 46. a polygon having three sides and three angles adding up to 180°
  23. 47. an angle whose measure is less than 90°
Down
  1. 1. a polygon with six sides
  2. 3. an angle whose measure is greater than 90° and less then 180°
  3. 4. a point at or near the center or middle
  4. 5. the distance across a circle through the center
  5. 6. a closed geometric figure made up of three or more line segments that intersect only at their endpoints
  6. 9. a quadrilateral with exactly one pair of parallel lines
  7. 10. an angle whose measure is exactly 180°
  8. 11. a triangle with no congruent sides
  9. 12. a polygon of nine angles and nine sides
  10. 14. a polygon with all sides equal in length and in measure
  11. 15. a polygon with eight sides
  12. 16. a triangle with three congruent sides
  13. 19. a covering of a plane with congruent copies of the same pattern so that there are no gaps or overlaps
  14. 25. a figure formed by two rays that begin at a common point
  15. 27. a triangle with one obtuse angle
  16. 28. an instrument for lying down and measuring angles in drawing and plotting
  17. 29. a triangle with at least two congruent sides
  18. 31. a segment, other than a side, that connects two vertices of a polygon
  19. 32. straight lines that do not intersect and are not in the same plane
  20. 33. a figure that extends without end in opposite directions
  21. 35. A polygon with seven sides
  22. 36. a parallelogram with four congruent sides
  23. 37. a figure without dimensions that is represented by a dot
  24. 38. two lines in the same plane that do not intersect and will never
  25. 39. a quadrilateral with both pairs of opposite sides parallel
  26. 42. the exact same