Across
1
Exact correspondence on both sides
3
Result of raising a number to an exponent
5
Line segment connecting two circle points
6
Part of a line with two endpoints
7
Middle value in an ordered dataset
9
Three-sided polygon
Down
1
Collection of distinct elements
2
Repeated addition
3
Total distance around a shape
4
Round shape with all points equidistant
8
Proven mathematical statement
10
Power to which a number is raised
11
Number with digits after a point