Across
1
Number divisible only by 1 and itself
3
Result of multiplication
6
Amount of space an object occupies
8
Symbol representing unknown value
9
Difference between highest and lowest values
Down
2
Round shape with all points equidistant
4
Part of a whole number
5
Split into equal parts
7
Collection of distinct elements
10
Lines that never intersect
11
Rectangular array of numbers