Across
1
The number representing nothing
2
Line touching circle at one point
3
Result of addition
4
Result of raising a number to an exponent
6
Part of a circle's circumference
7
Mathematical statement of equality
11
Math using letters for unknown values
Down
2
Proven mathematical statement
3
Part of a line with two endpoints
4
Lines that never intersect
5
Line crossing from corner to corner
8
Number less than zero
9
U-shaped curve of a quadratic function
10
Symbol representing unknown value