Across
1
Reference line in a graph
4
Round shape with all points equidistant
5
Repeated addition
6
Result of raising a number to an exponent
8
Distance from center to edge of circle
11
Mathematical statement of equality
Down
2
Rectangle with four equal sides
3
Value that does not change
7
Divisible by two
9
Math using letters for unknown values
10
System of ordered marks for measuring