Unit 1 Defintions

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Across
  1. 3. half of a straight angle. It measures 90 degrees
  2. 6. across a line moves every point on a figure to a point directly on the opposite side of the line
  3. 8. a line that crosses parallel lines
  4. 10. a point where two or more edges meet
  5. 11. to turn opposite of the way the hands of a clock turn
  6. 12. When part of an original figure matches up with part of a copy, we call them _______________ parts
  7. 13. angles have measures that add up to 180 degrees
  8. 15. to turn in the same direction as the hands of a clock
  9. 16. a move that does not change any measurements of a figure. Translations, rotations, and reflections are rigid transformations
  10. 18. the result of translations, rotations, and reflections on an object
  11. 19. a set of translations, rotations, reflections, and dilations on a figure
  12. 20. opposite angles that share the same vertex
Down
  1. 1. angles have measures that add up to 90 degrees
  2. 2. angles that are made by a transversal crossing two parallel lines
  3. 4. One figure is congruent to another if it can be moved with translations, rotations, and reflections to fit exactly over the other
  4. 5. moves every point on a figure around a center by a given angle in a specific direction
  5. 7. a translation, rotation, reflection, or dilation, or a combination of these
  6. 9. moves every point in a figure a given distance in a given direction
  7. 14. an angle that forms a straight line. It measures 180 degrees
  8. 17. a system for telling where points are