Across
1
Number that divides evenly into another
3
Lines that never intersect
4
Split into equal parts
6
Number with digits after a point
7
Value that does not change
8
Distance from center to edge of circle
11
Collection of distinct elements
Down
2
Exact correspondence on both sides
3
Total distance around a shape
5
Difference between highest and lowest values
9
Math using letters for unknown values
10
Line segment connecting two circle points
12
Symbol representing unknown value