Geometry vocabulary

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Across
  1. 4. The point of concurrency of the angle bisectors of a triangle (8)
  2. 8. A ___ of a triangle is a segment whose endpoints are a vertex and the midpoint of the side opposite the vertex. (6)
  3. 10. A(n) ___ of a triangle is a perpendicular segment from a vertex to the line containing the side opposite the vertex. (8)
  4. 11. A drawing in which all lengths are proportional to corresponding actual lengths (5,7)
  5. 13. A(n) ___ of a triangle is the segment that joins the midpoints of two sides of the triangle. (10)
  6. 15. The sum of two vectors (9)
  7. 17. A parallelogram with four right angles (9)
  8. 18. Figures in the same plane are said to be ____. (8)
  9. 21. A type of statement that combines a conditional statement and its converse (13)
  10. 22. Statements with the same truth value are ___. (10)
  11. 25. The point of intersection of the medians of a triangle. (8)
  12. 28. The distance from the initial point to the terminal point of a vector is the ___ of the vector. (9)
  13. 29. A point in a segment that divides the segment into two congruent segments (8)
  14. 30. An angle whose measure is 90 degrees is a ____ angle. (5)
  15. 31. The side in an isosceles triangle that is not a leg (4)
  16. 33. ∼q→∼p (14)
  17. 35. The Reflexive Property, Symmetric Property, and Transitive Property are all properties of ____. (10)
  18. 36. The distance around a circle (13)
  19. 38. The side opposite the right angle in a right triangle (10)
  20. 39. A polygon is ___ in a circle if the vertices of the polygon are on the circle. (9)
  21. 41. A statement that two ratios are equal (10)
  22. 43. A three-dimensional figure that has a circular base, a vertex not in the plane of the circle, and a curved lateral surface (4)
  23. 45. An angle ____ is a ray that divides an angle into two congruent angles. (8)
  24. 48. The intersection of the faces of a polyhedron are its ___. (5)
  25. 50. A segment whose endpoints are on the circle (5)
  26. 51. A flat surface that has no thickness containing many lines and extending without end in the direction of its lines (5)
  27. 52. Angles in a polygon that share a side are ------------ angles (11)
  28. 54. An angle of ___ is the angle formed by a horizontal line and the line of sight to an object above the horizontal line. (9)
  29. 55. The ___ of a parallelogram, triangle, or trapezoid is the length of its altitude. (6)
Down
  1. 1. A(n) ____ is formed by two rays with a common endpoint. (5)
  2. 2. A series of points that extends in two directions without end (4)
  3. 3. A geometric tool used to draw circles and parts of circles (7)
  4. 5. ___ polygons are polygons that have corresponding sides congruent and corresponding angles congruent (9)
  5. 6. Two lines that lie in the same plane but do not intersect are ____ lines. (8)
  6. 7. A quadrilateral with two pairs of congruent adjacent sides and no opposite sides congruent (4)
  7. 9. A ___ of a circle is an angle whose vertex is the center of the circle. (7,5)
  8. 10. Two coplanar angles that have a common side and a common vertex but no common interior points are called ____ angles. (8)
  9. 12. ____ reasoning is a process of reasoning logically from given facts to a conclusion. (9)
  10. 14. A quadrilateral with two pairs of parallel sides (13)
  11. 16. An "if-then" statement (11)
  12. 19. The ratio of the circumeference of any circle to its diameter (2)
  13. 20. The numbers 5, 12, and 13 form a ___. (11,6)
  14. 23. An accepted statement of fact (9)
  15. 24. An arc that is smaller than a semicircle is a(n) ___ arc. (5)
  16. 26. A parallelogram with four congruent sides (7)
  17. 27. A great circle divides a sphere into two ___. (11)
  18. 32. The part of a conditional statement that follows the word "then" (10)
  19. 34. A two-dimensional pattern that you can fold into a three-dimensional figure (3)
  20. 37. When a triangle is ___ about a circle, each side is tangent to the circle. (13)
  21. 38. The part of a conditional statement that follows the word "if" (10)
  22. 40. An angle of ___ is the angle formed by a horizontal line and the line of sight to an object below the horizontal line. (10)
  23. 42. Collinear rays with the same endpoint that form a line are ____ rays. (8)
  24. 43. 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)
  25. 44. A(n) ___ trapezoid is a trapezoid whose nonparallel opposite sides are congruent. (9)
  26. 46. Circles that lie in the same plane and have the same center are ___ circles. (10)
  27. 47. A segment that contains the center of the circle and whose endpoints are on the circle (8)
  28. 49. A ____ proof is a convincing argument that uses deductive reasoning and in which the statements and reasons are connected in sentences. (9)
  29. 53. The set of all points in a plane that are a given distance from a given point (6)