Geometry "R" Us

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Across
  1. 5. two angles that add up to 180 degrees
  2. 6. vertical number line
  3. 7. two objects that have the same shape
  4. 8. two sides with equal length
  5. 13. the angle between 90 and 180 degrees
  6. 14. changing the size of an object but not its shape
  7. 15. lines that cross at a right angle
  8. 16. the distance from the center of the circle to the outside
  9. 17. the longest side of a triangle
  10. 18. length x width x height
  11. 19. a line that intersects a set of lines
  12. 20. length x width
Down
  1. 1. the outside of a circle
  2. 2. two objects identical in size and shape
  3. 3. a squared + b squared + c squared
  4. 4. a straight line going through the center of the circle
  5. 9. horizontal number line
  6. 10. a triangle with three congruent sides
  7. 11. two angles that add up to 90 degrees
  8. 12. one half of an object reflects over the other half