Across
1
Exact correspondence on both sides
2
Total distance around a shape
5
Middle value in an ordered dataset
6
Part of a circle's circumference
8
System of ordered marks for measuring
10
Steepness of a line
Down
1
Part of a line with two endpoints
2
Result of raising a number to an exponent
3
Rectangular array of numbers
4
Three-sided polygon
7
Number that divides evenly into another
9
Difference between highest and lowest values
11
Repeated addition