Across
1
Rectangle with four equal sides
3
Split into equal parts
7
System of ordered marks for measuring
8
Divisible by two
9
Comparison of two quantities
11
Lines that never intersect
Down
2
Rectangular array of numbers
3
Number with digits after a point
4
Three-sided polygon
5
Power to which a number is raised
6
Number greater than zero
10
Symbol representing unknown value