Pi Day Crossword

3. a decimal number that can't be written as a fraction and never ends
10. did the first calculation of pi
13. a branch of mathematics that uses letters to represent numbers and that studies numbers and the operations
14. breaking a number up into an equal number of parts
15. the branch of mathematics that deals with the finding and properties of derivatives and integrals of functions
16. the total space taken up by a flat (2-D) surface or shape of an object.
18. a number which produces a specified quantity when multiplied by itself
20. the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs

1. the set of points in a plane that are equidistant from a given point
2. a numerical quantity that is not a whole number
4. equal in value, amount, function, meaning, etc.
5. the enclosing boundary of a curved geometric figure, especially a circle.
6. the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
7. a whole number greater than 1 whose only factors are 1 and itself.
8. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
9. the process of adding a number to itself a particular number of times
11. a straight line from the center to the circumference of a circle or sphere.
12. The numeric relationship between two or more things is called
17. standing in for an unknown numerical value in an equation or an algebraic expression
19. a statement that the values of two mathematical expressions are equal (indicated by the sign =).