Across
1
Divisible by two
3
Rectangular array of numbers
6
Number divisible only by 1 and itself
7
Part of a circle's circumference
8
U-shaped curve of a quadratic function
Down
2
Difference between highest and lowest values
4
Number with digits after a point
5
Symbol representing unknown value
6
Parts per hundred
9
Distance from center to edge of circle
10
Rectangle with four equal sides