Math Book Lesson 50-end of book

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Across
  1. 3. circle A circle that is tangent to each side of a polygon
  2. 6. A transformation that changes the size of a figure but not its shape
  3. 7. symbols used to label the image in a transformation
  4. 8. Half of a sphere
  5. 10. geometry The system of geometry described by Euclid.in particular, this system of geometry satisfies the parallel postulate
  6. 12. of a cone A part of a cone with two circular parallel bases
  7. 13. triple A set of three numbers that can be used to locate a point (x,y,z) in a three-dimensional coordinate plane
  8. 14. method A method of adding two vectors by drawing a parallelogram using the vectors as two of the consecutive sides; the sum is a vector along the diagonal of the parallelogram
  9. 15. Solid One of the five regular polyhedron: a tetrahedron, a cube , an octahedron, a dodecahedron, or an icosahedron
  10. 19. trapezoid A trapezoid in which the legs are congruent
  11. 20. cosine The measure of an angle whose cosine ratio is known
  12. 22. of symmetry The line that a figure can be rotated about so that the image corresponds with the preimage
  13. 23. polygon A polygon whose sides are all tangent to the same circle
  14. 24. of a circle The set of all points outside a circle
  15. 26. angle of an isosceles triangle One of the two angles that have the base of the triangle as a side
  16. 29. the perpendicular distance from the center of a regular polygon to one of it's sides
  17. 30. An ordered rectangular arrangement of numbers
  18. 31. of a cone The perpendicular segment from the vertex to the plane containing the base
  19. 32. edge An edge of a prism or pyramid that is not an edge of a base
  20. 33. The original figure in a transformation
  21. 34. of symmetry A line that divides a plane figure into two congruent reflected halves
  22. 35. circle A circle on a sphere that divides the sphere into two hemispheres
  23. 38. vectors Vectors that have the same magnitude and opposite directions
  24. 40. A transformation that does not change the size or shape of a figure
  25. 41. of elevation The angle formed be a horizontal line and a line of sight to a point
  26. 43. A shape that results from a transformation of a figure known as the preimage
  27. 45. reflection A composition of a translation and reflection across a line parallel to the translation vector
  28. 46. of a trapezoid The segment whose endpoints are the midpoints of the legs of the trapezoid
Down
  1. 1. Symmetry Rotational symmetry of order 2
  2. 2. A polygon with 12 faces
  3. 4. section The intersection of a three-dimensional figure and a plane
  4. 5. power of a vector The starting point of a vector
  5. 9. transformation A combination of transformations
  6. 11. geometry A system of geometry in which the parallel postulate does not hold
  7. 16. of an angle In a right triangle , the ratio of the length of the hypotenuse to the length of the side opposite the angle
  8. 17. An eight - sided polygon
  9. 18. drawing A drawing in which non vertical parallel lines appear to meet at one or two points called vanishing points
  10. 21. A polygon with 20 faces
  11. 23. of a sphere The point inside a sphere that is equidistant from every point on the sphere
  12. 24. vectors Two vectors that have the same magnitude and the same direction
  13. 25. prism A prism that has at least one non rectangular lateral face
  14. 27. The region between two concentric circles
  15. 28. surface of a cone The curved surface of a cone
  16. 33. matrix A matrix that represents the coordinates of the vertices of a polygon
  17. 34. of best fit The that comes closest to all of the points in a data set
  18. 36. A dilation that produces an image larger than its preimage
  19. 37. The horizontal line in a perspective drawing that contains vanishing point(s)
  20. 39. An equation that is true for all values of the variable
  21. 42. of a trapezoid One of the two nonparallel sides of the trapezoid
  22. 44. secant segment A segment of a secant that lies in the exterior of a circle with one endpoint on the circle