Across
1
Single numeral from 0 to 9
3
Rectangle with four equal sides
4
Lines that never intersect
6
Number that divides evenly into another
7
Rectangular array of numbers
12
System of ordered marks for measuring
Down
2
Number divisible only by 1 and itself
4
Parts per hundred
5
Comparison of two quantities
8
Distance from center to edge of circle
9
Math using letters for unknown values
10
Mathematical statement of equality
11
Line touching circle at one point