Across
1
Value that does not change
4
Number divisible only by 1 and itself
7
Total distance around a shape
8
Number that divides evenly into another
9
Line touching circle at one point
Down
2
Difference between highest and lowest values
3
Corner point of a polygon
4
Lines that never intersect
5
Part of a whole number
6
Space between two intersecting lines
10
Number with digits after a point