Across
1
Math using letters for unknown values
5
Split into equal parts
7
Line segment connecting two circle points
8
Number that divides evenly into another
9
Divisible by two
10
Repeated addition
Down
2
Distance from center to edge of circle
3
Collection of distinct elements
4
Symbol representing unknown value
6
Part of a whole number
11
Result of raising a number to an exponent
12
Number divisible only by 1 and itself