Across
1
Symbol representing unknown value
5
Result of raising a number to an exponent
6
Rectangle with four equal sides
8
Number with digits after a point
9
Math using letters for unknown values
11
Comparison of two quantities
Down
2
Single numeral from 0 to 9
3
Round shape with all points equidistant
4
Three-sided polygon
7
Number less than zero
10
Line segment connecting two circle points