Across
1
System of ordered marks for measuring
4
Part of a line with two endpoints
5
Result of raising a number to an exponent
6
Three-sided polygon
8
Value that does not change
10
Proven mathematical statement
11
Line segment connecting two circle points
12
Middle value in an ordered dataset
Down
2
Round shape with all points equidistant
3
Exact correspondence on both sides
5
Closed shape with straight sides
7
Divisible by two
9
Visual representation of data