Across
1
Line touching circle at one point
4
Steepness of a line
5
Lines that never intersect
9
Number with digits after a point
11
Amount of space an object occupies
Down
2
Round shape with all points equidistant
3
Part of a whole number
6
Reference line in a graph
7
Divisible by two
8
Number less than zero
10
Mathematical statement of equality
12
Result of addition