Geometry Vocab

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Across
  1. 2. line ray or another figure that passes through the midpoint of a segment
  2. 6. to cut in half
  3. 8. set of all points equidistant from a point called the center
  4. 9. quadrilateral with 2 distinct pairs of consecutive congruent sides
  5. 10. parallelogram with exactly 4 right angles
  6. 11. part of the curve of a circle (two points and all points ON THE CIRCLE that are between)
  7. 13. polygon with 4 sides
  8. 16. statement that is accepted as true without proof
  9. 19. ray that divides an angle into two congruent angles
  10. 20. a pair of angles that lie on the same side of the transversal and are on the inside of the 2 lines that the transversal intersects
  11. 22. transformation that turns a figure around a fixed point
  12. 24. points or lines that lie in the same plane
  13. 27. an arc (of a circle) measuring less than 180 degrees
  14. 28. intersection of a circle and a tangent line
  15. 29. an arc measuring more than 180 degrees
  16. 30. straight path that continues forever in both directions
  17. 31. segment that has endpoints on the circle
  18. 34. names a specific location and has no size
  19. 36. part of a line with 2 endpoints and all points in between them
  20. 39. transformation that slides all points the same distance and in the same direction
  21. 40. in a triangle the point of concurrency of the altitudes
  22. 45. points that lie on the same line
  23. 47. represented by a flat surface that extends forever in all directions and has no edges
  24. 48. triangle with 3 acute angles
  25. 49. quadrilateral with 2 pairs of parallel sides
  26. 51. units of measure for angles…”angles are measured in _________”
  27. 52. 2 angles that add to 180 degrees
  28. 54. a parallelogram that has all 4 sides congruent
  29. 55. to draw inside (a circle inscribed in a triangle intersects each side of the triangle at a point of tangency)
  30. 56. transformation that stretches or compresses a figure both vertically and horizontally by the same measure
  31. 58. triangle with all sides congruent
  32. 60. (of an isosceles triangle) the noncongruent side
  33. 62. lines that intersect at right angles
  34. 63. angle that measures exactly 90 degrees
  35. 64. triangle that has no congruent sides
  36. 65. the side of a right triangle that is across from the right angle
  37. 66. to draw a circle outside of a polygon (vertices are points on the circle)
  38. 69. coplanar lines that do not intersect
  39. 70. transformation that changes position of a figure without changing size or shape
  40. 71. opposite/adjacent (trigonometry) or a line that intersects a circle at one point
  41. 72. 2 angles that add up to 90 degrees
Down
  1. 1. angles in a triangle, the two interior angles not adjacent to the exterior angle
  2. 3. noncoplanar lines that never intersect
  3. 4. segment that connects 2 vertices of a polygon
  4. 5. line that intersects a circle at two points
  5. 7. having the same measure
  6. 12. transformation that maps a preimage to the image across a line of reflection
  7. 14. figure formed by two rays with the same endpoint
  8. 15. segment that connects the midpoints of 2 sides of a triangle or legs of a trapezoid
  9. 17. pair of angles that lie on opposite sides of a transversal, outside of the 2 lines intersected by the transversal
  10. 18. a pair of angles that lie on the same side of a transversal and are in the same position
  11. 19. a pair of angles that lie on opposite sides of a transversal but are between the 2 lines intersected by the transversal
  12. 21. angle that measures more than 0 degrees but less than 90 degrees
  13. 23. angle with vertex at the center of a circle
  14. 25. the measure of the two dimensional space enclosed within a closed shape or figure
  15. 26. part of a line with one endpoint and continuing forever in one direction
  16. 32. point that divides a segment into 2 congruent segments
  17. 33. the angle formed by extending the side of a polygon
  18. 35. angle that measures exactly 180 degrees
  19. 37. a pair of angles that are adjacent and supplementary
  20. 38. argument that uses logic to show that a conclusion is true
  21. 41. having the same angle measure (triangle with 3 congruent angles)
  22. 42. quadrilateral with exactly one pair of parallel sides and one pair of congruent legs
  23. 43. angle that measures more than 90 degrees but less than 180 degrees
  24. 44. triangle with only two congruent sides
  25. 46. statement that can be proved
  26. 50. two rays that share a common endpoint and form a straight line
  27. 52. half of a circle (arc measuring 180 degrees)
  28. 53. parallelogram with 4 right angles and 4 congruent sides
  29. 57. 2 angles with a common side and a common vertex (no other points in common)
  30. 59. line that intersects 2 (or more) coplanar lines at different points
  31. 61. when 2 lines intersect, the angles that are across from each other are vertical
  32. 67. happens when a figure has rigid motion that can map on top of itself
  33. 68. segment with an endpoint at the center of a circle and the other endpoint on the circle