Across
1
Result of multiplication
3
Math using letters for unknown values
5
Corner point of a polygon
7
Line touching circle at one point
8
Symbol representing unknown value
Down
2
Steepness of a line
4
Line segment connecting two circle points
6
Number with digits after a point
9
Parts per hundred
10
Rectangular array of numbers
11
Number divisible only by 1 and itself
12
Visual representation of data