Across
1
Total distance around a shape
5
Parts per hundred
6
System of ordered marks for measuring
7
Number less than zero
8
Proven mathematical statement
9
Split into equal parts
10
Three-sided polygon
Down
1
Closed shape with straight sides
2
Result of addition
3
Sum divided by count
4
Middle value in an ordered dataset
11
Line touching circle at one point
12
Distance from center to edge of circle