Across
1
Round shape with all points equidistant
2
Part of a line with two endpoints
5
Value that does not change
6
Power to which a number is raised
10
Single numeral from 0 to 9
11
Result of raising a number to an exponent
Down
2
Exact correspondence on both sides
3
Middle value in an ordered dataset
4
Result of multiplication
7
Line touching circle at one point
8
Corner point of a polygon
9
Collection of distinct elements
12
Total distance around a shape