Across
1
Result of multiplication
4
Part of a circle's circumference
5
Closed shape with straight sides
7
Proven mathematical statement
9
Symbol representing unknown value
10
Part of a whole number
11
Steepness of a line
Down
2
Rectangular array of numbers
3
Comparison of two quantities
5
Number greater than zero
6
Line touching circle at one point
8
Number less than zero