chapter 3 vocab

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Across
  1. 3. the vertical number line on a coordinate plane
  2. 4. a pair of numbers used to locate a point on a grid
  3. 7. a plane formed by a horizontal line called the x-axes and a vertical line called the y-axis
  4. 8. the point where the two axes of a coordinate plane intersect
  5. 11. a line that divides a figure into two halves that are reflections of each other
  6. 12. the first number in an ordered pair; tells the distance to move right or left from (0,0)
  7. 13. a figure has a line symmetry if it can be folded about a line so that it's two parts match exactly
  8. 14. any integer more than zero
Down
  1. 1. the distance of an integer from zero on a number line
  2. 2. any integer less than zero
  3. 3. the second number in an ordered pair; tells the distance to move up or down from (0,0)
  4. 5. two numbers that are the same distance, but in opposite direction, from zero on a number line
  5. 6. any number that can be written as a ratio a/b where a and b are integers and b doesn't equal 0
  6. 9. the four regions of a coordinate plane separated by the x-axes and y-axes
  7. 10. the horizontal number line on a coordinate plane
  8. 15. a set of numbers and their opposites