Across
1
Part of a line with two endpoints
3
Space between two intersecting lines
4
Number greater than zero
5
Line segment connecting two circle points
8
Number with digits after a point
11
Corner point of a polygon
Down
2
Round shape with all points equidistant
3
Math using letters for unknown values
6
Single numeral from 0 to 9
7
Number divisible only by 1 and itself
9
Difference between highest and lowest values
10
Line crossing from corner to corner
12
Comparison of two quantities