Across
1
Number less than zero
2
Result of multiplication
6
Space between two intersecting lines
7
Line touching circle at one point
9
Part of a circle's circumference
10
Difference between highest and lowest values
Down
2
Parts per hundred
3
System of ordered marks for measuring
4
Number greater than zero
5
Math using letters for unknown values
8
Rectangular array of numbers
11
Steepness of a line