Geometry

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Across
  1. 2. Angles two non adjacent angels formed by two intersecting lines
  2. 5. the amount of space that a substance or object occupies
  3. 9. the point halfway between the endpoints of a segment
  4. 11. closed figure, sides are all segments.
  5. 12. Pir^2 r=...
  6. 15. Angle < 90 degrees
  7. 16. 3 sided figure
  8. 18. a unit of measure used in measuring angles and arcs
  9. 19. the common endpoint
  10. 20. Lines that never intersect
  11. 25. A quadrilateral that has at least one pair of parallel sides
  12. 28. Part of the circumference of a circle
  13. 30. A solid or hollow object that tapers from a circular or roughly circular base to a point.
  14. 31. A three-dimensional figure with identical equilateral squares as faces
  15. 32. A measure of the total area that the surface of the object occupies.
  16. 34. when all sides of a shape are the same length.
  17. 37. A special type of rectangle that has equilateral (same length) sides and parallel opposite sides.
  18. 38. 7 sided figure
  19. 40. A three-dimensional figure on which the faces are triangular and converge to a single point at the top.
  20. 42. A two-dimensional, closed, four-sided figure with four right angles.
  21. 44. the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.
  22. 47. A line with two endpoints.
  23. 48. a precise location on a plane.
  24. 49. describes the direction and steepness of the line.
  25. 50. extends in 1 direction infinitely
  26. 51. divides an angle into 2 equal parts
Down
  1. 1. the sum of all the sides of a polygon
  2. 3. 8 sided figure
  3. 4. points that lie on the same plane
  4. 6. Twice the radius of a circle
  5. 7. the perimeter of a circle
  6. 8. two angles whose measures have a sum of 180
  7. 10. 3.14...
  8. 13. formed by two non colinear rays that have a common endpoint
  9. 14. A 3 dimensional, round body whose surface is at all points equidistant from the center.
  10. 17. 5 sided figure
  11. 21. two angles that have a common vertex, lie on the same plane, and have a common side but no interior points
  12. 22. the extent or measurement of a surface
  13. 23. Pair a pair of adjacent angles whose non common sides are opposite rays
  14. 24. 2 lines which make a 90 degree angle.
  15. 26. A triangle with at least 2 congruent sides.
  16. 27. a quadrilateral with two pairs of parallel sides.
  17. 29. two angles whose measures have a sum of 90
  18. 33. Angle = 90 degrees
  19. 35. 4 sided figure.
  20. 36. a statement that is assumed to be true based on basic geometric principles.
  21. 37. a segment, line, or plane that intersects a segment at its midpoint
  22. 39. Angle > 90 degrees
  23. 41. extends in both directions infinitely
  24. 43. the measurement or extent of something from end to end.
  25. 45. A closed four-sided figure with parallel opposite sides.
  26. 46. having the same measure