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Across 4. a mathematical statement that says two expressions are equal 7. error resulting from choosing a sample that is not representive of the whole population 8. an algebraic relationship between two or more variables 9. identical in size and shape 10. the value of the variable that makes an equation true 11. the point that divides a line segment into two different segments 12. the number of square units contained in a two dimensional shape 13. a graph that uses bars to represent data 16. a line segment ,joining 2 points on the circumference, that passes through the center of a circle 17. a triangle with all three sides equal 20. a prisim with six congruent square shapes 23. divide into 2 equal parts 25. an angle that is formed inside a polygon by two sides meeting at a vertex 27. a letter used to represent a value that can change or vary. 28. the number by which a variable is multiplied 29. a number that is part whole number and part fraction 30. a number that is multiplied by itslef to give another number 31. the longest side of a right triangle 32. the perimeter of a circle

Down 1. a line segment joining the center of a circle to a point on the circumference, of the length of this line segment 2. the greatet volume that a container can hold 3. a measure of the steepness of a line 5. a three dimensional oject with 2 parallel circular bases 6. a term that contains no variables, its value does not change 12. pairs of equal angles formed on either side of a transversal crossing pair of parallel lines. 14. a triangle in which each of the interior angles measure than 90 degrees 15. the distance around the outside of a shape 18. a polygon that has 4 sides 19. a line that divides an angle into 2 equal parts 21. having a angles equal 22. the height of a geometric figure 24. the amount of space that an oject occupies , measured in cubic units 26. a survey of all the members of a population