Across
1
Symbol representing unknown value
2
Parts per hundred
5
Visual representation of data
7
Math using letters for unknown values
8
The number representing nothing
11
Number divisible only by 1 and itself
Down
2
Closed shape with straight sides
3
U-shaped curve of a quadratic function
4
Three-sided polygon
6
Number that divides evenly into another
9
Total distance around a shape
10
Part of a line with two endpoints