Across
1
Mathematical statement of equality
4
Lines that never intersect
5
Rectangle with four equal sides
7
Comparison of two quantities
9
The number representing nothing
10
Part of a whole number
Down
2
Split into equal parts
3
Number less than zero
4
Number greater than zero
5
Result of addition
6
Number that divides evenly into another
8
System of ordered marks for measuring
11
Collection of distinct elements