Across
1
Math using letters for unknown values
2
Line touching circle at one point
4
Divisible by two
6
Number less than zero
7
Comparison of two quantities
10
Repeated addition
Down
1
Space between two intersecting lines
2
Proven mathematical statement
3
Difference between highest and lowest values
5
Three-sided polygon
8
Result of raising a number to an exponent
9
Number that divides evenly into another
11
Closed shape with straight sides