Across
1
Part of a whole number
4
Symbol representing unknown value
6
Number less than zero
8
Steepness of a line
9
Parts per hundred
10
Round shape with all points equidistant
Down
2
Lines that never intersect
3
Result of raising a number to an exponent
5
Three-sided polygon
7
Line touching circle at one point
9
Number greater than zero
11
Line crossing from corner to corner