Math Crossword Puzzle

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Across
  1. 7. An angle with a measure of 90 deg.
  2. 9. Base ten numbers written in the form a × 10^n where 1 ≤ a ≤ 10 and n is an integer.
  3. 11. The side opposite the right angle in a right triangle.
  4. 13. The two sides of a right triangle that form the right angle.
  5. 15. The point of intersection of a graph with the x-axis.
  6. 18. the number x is usually called the base of the expression x^n, and n is called the exponent.
  7. 20. A triangle that has a right angle.
  8. 21. K is called the constant of proportionality.
Down
  1. 1. A circular movement opposite to the direction of the movement of a clock.
  2. 2. An equation showing the relationship between two or more quantities represented by variables.
  3. 3. A math sentence using the equal sign to state that two expressions represent the same number.
  4. 4. The point with coordinate 0 on a number line; the point with coordinates (0, 0) in the coordinate plane.
  5. 5. The point of intersection of a graph with the y-axis.
  6. 6. A letter or symbol that represents an unknown quantity.
  7. 8. The horizontal axis of a coordinate plane.
  8. 10. The equation y = mx + b is the slope-intercept form of a line, where m is the slope and b is the y-intercept of the line.
  9. 12. A ratio of two unlike quantities that has a denominator of 1 unit.
  10. 14. Two lines in a plane that never intersect.
  11. 16. Interest paid a single time on a principal invested or borrowed. Computed using I = Prt.
  12. 17. A pair of numbers that represent the coordinates of a point in the coordinate plane
  13. 19. The vertical axis of a coordinate plane.