Across
1
Distance from center to edge of circle
2
Result of raising a number to an exponent
4
Math using letters for unknown values
5
Collection of distinct elements
6
Round shape with all points equidistant
7
Corner point of a polygon
8
Number greater than zero
Down
2
Total distance around a shape
3
Steepness of a line
9
Parts per hundred
10
Visual representation of data
11
Proven mathematical statement
12
Symbol representing unknown value
13
Mathematical statement of equality