Geometry

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Across
  1. 1. A composition of a translation and a reflection across a line parallel to the translation vector.
  2. 3. For positive numbers a and b, the positive number x such that a/x = x/b.
  3. 5. The perpendicular segment from the vertex to the plane containing the base.
  4. 7. In a right triangle, the ratio of the length of the side adjacent to the angle to the length of the side opposite the angle.
  5. 9. An ordered rectangular arrangement of numbers.
  6. 10. The curved surface of a cone.
  7. 11. A trapezoid in which the legs are congruent.
  8. 12. The measure of an angle whose cosine ratio is known.
  9. 13. A way of drawing three-dimensional figures using isometric dot paper, which has equally spaced dots in a repeating triangular pattern.
  10. 25. The sum of the areas of the lateral faces of a prism or pyramid, or the area of the lateral surface of a cylinder or cone.
  11. 26. A polygon whose sides are all tangent to the same circle.
  12. 28. A circle that is tangent to each side of a polygon.
  13. 29. An equation that is true for all values of the variable.
  14. 30. A cone where the altitude does not intersect the center of the base.
  15. 31. The system of geometry described by Euclid. In particular, this system of geometry satisfies the Parallel Postulate.
  16. 33. A polyhedron with eight faces.
  17. 34. A polygon with 12 faces.
  18. 35. In a right triangle, the ratio of the length of the leg adjacent to the angle to the length of the hypotenuse.
  19. 38. A transformation that changes the size of a figure but not its shape.
  20. 39. A circle on a sphere that divides the sphere into two hemispheres.
  21. 41. Two vectors that have the same magnitude and the same direction.
  22. 42. A polyhedron with 20 faces.
  23. 43. A line that is tangent to two circles.
  24. 44. The measure of an angle whose sine ratio is known.
  25. 45. The form of a vector that lists the vertical and horizontal change from the initial point to the terminal point.
  26. 46. The set of all points outside a circle.
  27. 47. Te point inside a sphere that is equidistant from every point on the sphere.
  28. 48. A transformation that does not change the size or shape of a figure.
  29. 49. A combination of transformations.
  30. 50. The line that comes closest to all of the points in a data set.
Down
  1. 2. A part of a cone with two circular bases.
  2. 4. A segment of a secant that lies in the exterior of a circle with one endpoint on the circle.
  3. 6. The starting point of a vector.
  4. 8. A system of geometry in which the parallel Postulate does not hold.
  5. 14. A shape that results from a transformation of a figure known as the preimage.
  6. 15. Coplanar circles with the same center.
  7. 16. The orientation of a vector, which is determined by the angle the vector makes with a horizontal line.
  8. 17. The region between two co-centric circles.
  9. 18. A dilation that produces an image larger than its preimage.
  10. 19. One of the two nonparallel sides of the trapezoid.
  11. 20. The line that a figure can be rotated about so that the image corresponds with the preimage.
  12. 21. The perpendicular distance from the center of a regular polygon to one of it's sides.
  13. 22. One of the two angles that have the base of a triangle as a side.
  14. 23. A perspective drawing with one vanishing point.
  15. 24. In a right triangle, the ratio of the length of the hypotenuse to the length of the side opposite the angle.
  16. 27. The angle formed by a horizontal line and a line of sight to a point below.
  17. 32. The intersection of a three-dimensional figure and a plane.
  18. 36. The horizontal line in a perspective drawing that contains the vanishing point(s).
  19. 37. A method of adding two vectors by placing the tail of the second vector on the head of the first vector; the sum is the vector drawn from the tail of the first vector to the head of the second vector.
  20. 40. Half of a sphere