Geometry Vocabulary

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Across
  1. 1. A triangle with one angle greater than 90 degrees.
  2. 5. A three-dimensional shape with six square faces of equal size.
  3. 6. A triangle with two sides of equal length.
  4. 13. A line with one endpoint that extends infinitely in one direction.
  5. 14. A line segment connecting a vertex of a triangle to the midpoint of the opposite side.
  6. 15. The result of dividing one number by another.
  7. 16. A three-dimensional shape with all points on its surface equidistant from its center.
  8. 18. A quadrilateral with opposite sides parallel.
  9. 20. The distance from the center of a circle to any point on its circumference.
  10. 23. The point where the perpendicular bisectors of a triangle intersect.
  11. 25. pair Two adjacent angles that form a straight line and add up to 180 degrees.
  12. 26. A three-dimensional shape with a circular base and a curved surface that tapers to a point.
  13. 27. A triangle with all angles less than 90 degrees.
  14. 29. The measure of the steepness of a line.
  15. 30. The longest side of a right triangle, opposite the right angle.
  16. 31. A quadrilateral with two pairs of adjacent sides of equal length.
  17. 34. An angle that measures greater than 90 degrees but less than 180 degrees.
  18. 35. A polygon with four sides.
  19. 39. A quadrilateral with four sides of equal length.
  20. 41. The point where the three altitudes of a triangle intersect.
  21. 42. A part of a circle's circumference.
  22. 43. An angle that measures greater than 180 degrees but less than 360 degrees.
  23. 44. The point where the angle bisectors of a triangle intersect.
  24. 46. A quadrilateral with four sides of equal length and four right angles.
  25. 47. An angle that measures exactly 180 degrees.
  26. 48. Two lines that intersect to form a right angle.
  27. 50. pair Two angles that are opposite each other and formed by two intersecting lines.
  28. 51. A three-dimensional shape with a polygonal base and triangular faces that meet at a vertex.
  29. 52. A region bounded by two radii of a circle and the arc between them.
  30. 53. A quadrilateral with one pair of opposite sides parallel.
  31. 54. A trigonometric function that relates the ratio of the adjacent side to the hypotenuse of a right triangle.
  32. 55. A flat surface of a three-dimensional shape.
Down
  1. 2. A trigonometric function that relates the ratio of the opposite side to the hypotenuse of a right triangle.
  2. 3. segment A part of a line that has two endpoints.
  3. 4. A pair of numbers used to locate a point on a coordinate plane.
  4. 5. The point where the medians of a triangle intersect.
  5. 7. Having the same size and shape.
  6. 8. Two lines that are not in the same plane and never intersect.
  7. 9. An angle that measures less than 90 degrees.
  8. 10. Two lines in the same plane that never intersect.
  9. 11. Having the same shape but not necessarily the same size.
  10. 12. The result of multiplying two or more numbers
  11. 17. A tool used to measure angles.
  12. 19. Two angles that share a common side and vertex.
  13. 21. A line segment where two faces of a three-dimensional shape meet.
  14. 22. An angle that measures exactly 90 degrees.
  15. 24. Two angles whose sum is 90 degrees.
  16. 28. A triangle with three sides of equal length.
  17. 29. Two angles whose sum is 180 degrees.
  18. 32. The distance across a circle, passing through its center.
  19. 33. The set of all points in a plane that are the same distance from a fixed point called the center.
  20. 36. The distance around a circle.
  21. 37. A line segment that connects two points on a circle's circumference.
  22. 38. A point where two or more edges of a three-dimensional shape meet.
  23. 40. A three-dimensional shape with two parallel congruent bases and rectangular or parallelogram-shaped sides.
  24. 45. A quadrilateral with four right angles.
  25. 49. A triangle with one right angle.