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Across 2. The point (0, 0) on a coordinate plane, where the x-axis and the y-axis intersect. 4. The vertical axis in a Cartesian coordinate system. 7. Set of two numbers in which the order has an agreed-upon meaning, such as the Cartesian coordinates (x, y), where the first coordinate represents the horizontal position, and the second coordinate represents the vertical position. 9. One of two or more expressions that are multiplied together to get a product. 10. The line segment connecting two nonadjacent vertices in a polygon. 13. The smallest nonzero number that is a multiple of two or more numbers. 14. A selection in which order is not important. 15. A closed plane figure made up of several line segments that are joined together. 20. A five-sided polygon. 22. A number or symbol, as 3 in (x + y)3, placed to the right of and above another number, symbol, or expression, denoting the power to which that number, symbol, or expression is to be raised. 23. The number of square units that covers a shape or figure. 24. Given or x^n, the "x" is the base. The base number gets multiplied by itself the number of times indicated by the exponent, "n". 25. A constant that multiplies a variable. 26. The sum of the lengths of the sides of a polygon. 27. A mathematical statement that says that two expressions have the same value; any number sentence with an equal sign. 28. The horizontal axis in a Cartesian coordinate plane.

Down 1. The square root of x is the number that, when multiplied by itself, gives the number, x. 3. The largest number that divides two or more numbers evenly. 5. A letter used to represent a number. 6. A parallelogram with four equal sides. 8. A quadrilateral with four equal sides and four 90 degree angles. 11. Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction. 12. One method for calculating the total number of outcomes in a sample space. 16. A measurement of space, or capacity. 17. The union of two rays with a common endpoint, called the vertex. 18. A quadrilateral with four 90-degree angles. 19. The side opposite the right angle in a right triangle. 21. A three-sided polygon.