Across
1
Number with digits after a point
4
Part of a circle's circumference
5
Distance from center to edge of circle
6
Result of addition
7
Corner point of a polygon
8
Mathematical statement of equality
12
Rectangular array of numbers
Down
2
Number less than zero
3
Value that does not change
9
Math using letters for unknown values
10
Exact correspondence on both sides
11
Parts per hundred