Unit 1 vocab math

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Across
  1. 2. (of a circle) a point that is the same distance from every point on the circle.
  2. 5. to explain why something is correct or incorrect by giving logical reasons.
  3. 7. a ratio that tells the number of units of one quantity for 1 unit of another quantity.Rates are often expressed using the word per, such as 5 miles per hour or 2 cups per serving.
  4. 8. the factor you multiply all the side lengths in a figure by to make a scale copy.
  5. 12. a line segment that goes through the center of a circle and has endpoints on the circle. Also, the distance across a circle through the center.
  6. 13. specific but not named.
  7. 17. the relationship between two quantities where one quantity is a constant multiple of the other quantity. If the quantities x and y are in a proportional relationship, you can represent that relationship with the equation y = kx, where the value of k is constant (unchanging)
  8. 21. a drawing in which the measurements correspond to the measurements of the actual object by the same scale.
  9. 23. a fraction in which the numerator is a fraction, the denominator is a fraction, or both the numerator and the denominator are fractions.
  10. 24. to know and say what something or someone is.
  11. 25. the amount of space inside a closed two-dimensional figure. Area is measured in square units such as square centimeters.
  12. 27. the point (0, 0) in the coordinate plane where the x-axis and y-axis intersect.
  13. 29. the unit rate in a proportional relationship.
  14. 30. to include as part of something.
Down
  1. 1. tells the relationship between a length in a drawing, map, or model to the actual length.
  2. 3. two ratios that express the same comparison. Multiplying both numbers in the ratio a : b by a nonzero number n results in the equivalent ratio na: no.
  3. 4. the distance around the outside of a circle. It can be thought of as the perimeter of the circle.
  4. 6. on to be determined by something.
  5. 9. an explanation of what something is or is like using words.
  6. 10. in a circle, the quotient circumference diameter Common approximations are 3.14
  7. 11. (of a circle) a line segment from the center of a circle to any point on the circle.Also the distance from the center to any
  8. 14. almost exact.
  9. 15. to be proof or evidence of
  10. 16. a pair of numbers, (x, y), that describes the location of a point in the coordinate plane. The x-coordinate gives the point's horizontal distance from the y-axis, and the y-coordinate gives the point's vertical distance from the x-axis.
  11. 18. a two-dimensional shape in which every point is the same distance from the center.
  12. 19. the first number in an ordered pair. It tells the point's horizontal distance from the y-axis.
  13. 20. the numerical part of a rate. For example, the rate 3 miles per hour has a unit rate of 3. For the ratio a : 6, the unit rate is the quotient
  14. 21. to believe to be true.
  15. 22. a way to compare two quantities when there are a units of one quantity for every b units of the other quantity. You can write the ratio in symbols as a : 6 and in words as a to b.
  16. 25. real and existing, not a model or copy.
  17. 26. the second number in an ordered pair. It tells the point's vertical distance from the x-axis.
  18. 28. length in one direction.A figure may have one, two, or three dimensions.