geometry vocabulary

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Across
  1. 6. An angle whose measure is 180 degrees is a ____ angle. (8)
  2. 10. The side opposite the right angle in a right triangle (10)
  3. 15. Circles that lie in the same plane and have the same center are ___ circles. (10)
  4. 16. An angle ____ is a ray that divides an angle into two congruent angles. (8)
  5. 17. A segment whose endpoints are on the circle (5)
  6. 21. The ___ of a circle is the region bounded by two radii and their intercepted arc. (6)
  7. 22. A ruler with no markings on it (12)
  8. 23. Figures in the same plane are said to be ____. (8)
  9. 24. The ratio of the circumeference of any circle to its diameter (2)
  10. 25. The distance from the initial point to the terminal point of a vector is the ___ of the vector. (9)
  11. 27. An "if-then" statement (11)
  12. 28. ___ polygons are polygons that have corresponding sides congruent and corresponding angles congruent (9)
  13. 30. In a right triangle with acute angle A, the ___ of angle A is the ratio of the leg opposite angle A to the hypotenuse. (4)
  14. 31. When a triangle is ___ about a circle, each side is tangent to the circle. (13)
  15. 33. An angle whose measure is 90 degrees is a ____ angle. (5)
  16. 34. A parallelogram with four right angles (9)
  17. 38. The sum of two vectors (9)
  18. 39. A segment that contains the center of the circle and whose endpoints are on the circle (8)
  19. 44. The set of all points (5)
  20. 46. A series of points that extends in two directions without end (4)
  21. 47. Two angles are ____ if the sum of their measures is 180 degrees. (13)
  22. 48. The angle between the legs of an isosceles triangle is called the ___ angle. (6)
  23. 50. The side in an isosceles triangle that is not a leg (4)
  24. 51. In a right triangle with acute angle A, the ___ of angle A is the ratio of the leg opposite angle A to the leg adjacent to angle A. (7)
  25. 53. The numbers 5, 12, and 13 form a ___. (11,6)
  26. 54. Two lines that lie in the same plane but do not intersect are ____ lines. (8)
  27. 57. Collinear rays with the same endpoint that form a line are ____ rays. (8)
  28. 59. ____ reasoning is a type of reasoning that reaches conclusions based on a pattern of specific examples or past events. (9)
  29. 61. Statements with the same truth value are ___. (10)
  30. 63. A quadrilateral with exactly one air of parallel sides (9)
  31. 65. An accepted statement of fact (9)
  32. 67. A quadrilateral with two pairs of congruent adjacent sides and no opposite sides congruent (4)
  33. 68. The point of concurrency of the angle bisectors of a triangle (8)
  34. 69. The set of all points in a plane that are a given distance from a given point (6)
  35. 70. A three-dimensional figure that has a circular base, a vertex not in the plane of the circle, and a curved lateral surface (4)
  36. 71. A polyhedron in which one face is a polygon and the other faces are triangles with a common vertex (7)
  37. 72. A line, ray, or segment that intersects a circle at two points (6)
  38. 73. The intersection of the faces of a polyhedron are its ___. (5)
Down
  1. 1. A polygon is ___ in a circle if the vertices of the polygon are on the circle. (9)
  2. 2. A measure of the space a figure occupies (6)
  3. 3. The part of a conditional statement that follows the word "if" (10)
  4. 4. A parallelogram with four congruent sides (7)
  5. 5. An arc that is smaller than a semicircle is a(n) ___ arc. (5)
  6. 7. A(n) ____ is formed by two rays with a common endpoint. (5)
  7. 8. The part of a conditional statement that follows the word "then" (10)
  8. 9. ____ lines are lines that do not lie in the same plane. (4)
  9. 11. A drawing in which all lengths are proportional to corresponding actual lengths (5,7)
  10. 12. A statement that two ratios are equal (10)
  11. 13. A(n) ___ of a triangle is the segment that joins the midpoints of two sides of the triangle. (10)
  12. 14. A(n) ___ of a triangle is a perpendicular segment from a vertex to the line containing the side opposite the vertex. (8)
  13. 18. Two coplanar angles that have a common side and a common vertex but no common interior points are called ____ angles. (8)
  14. 19. A polyhedron with two congruent and parallel faces, called bases (5)
  15. 20. A set of points, all of which meet a stated condition (5)
  16. 21. The ___ ratio is the ratio of the lengths of corresponding sides of similar figures. (10)
  17. 26. A point in a segment that divides the segment into two congruent segments (8)
  18. 27. A ___ of a circle is an angle whose vertex is the center of the circle. (7,5)
  19. 28. In a right triangle with acute angle A, the ___ of angle A is the ratio of the leg adjacent to angle A to the hypotenuse. (6)
  20. 29. The distance around a circle (13)
  21. 32. ∼q→∼p (14)
  22. 35. A geometric tool used to draw circles and parts of circles (7)
  23. 36. The ___ of a cone is one-half the perimeter of the base times the slant height. (7,4)
  24. 37. A quadrilateral with two pairs of parallel sides (13)
  25. 40. The part of the line containing two endpoints and all the points in between them (7)
  26. 41. A great circle divides a sphere into two ___. (11)
  27. 42. The ___ of a parallelogram, triangle, or trapezoid is the length of its altitude. (6)
  28. 43. The Reflexive Property, Symmetric Property, and Transitive Property are all properties of ____. (10)
  29. 45. A type of statement that combines a conditional statement and its converse (13)
  30. 49. An angle of ___ is the angle formed by a horizontal line and the line of sight to an object below the horizontal line. (10)
  31. 52. An angle of ___ is the angle formed by a horizontal line and the line of sight to an object above the horizontal line. (9)
  32. 55. A two-dimensional pattern that you can fold into a three-dimensional figure (3)
  33. 56. Any quantity that has magnitude and direction (6)
  34. 58. A ____ proof is a convincing argument that uses deductive reasoning and in which the statements and reasons are connected in sentences. (9)
  35. 60. A(n) ___ trapezoid is a trapezoid whose nonparallel opposite sides are congruent. (9)
  36. 62. The point of intersection of the medians of a triangle. (8)
  37. 64. A flat surface that has no thickness containing many lines and extending without end in the direction of its lines (5)
  38. 66. A ___ of a triangle is a segment whose endpoints are a vertex and the midpoint of the side opposite the vertex. (6)