Across
1
Symbol representing unknown value
4
Comparison of two quantities
7
Corner point of a polygon
8
Number that divides evenly into another
9
Number with digits after a point
10
Longest side of a right triangle
Down
2
U-shaped curve of a quadratic function
3
Lines that never intersect
5
Value that does not change
6
Number greater than zero
11
Sum divided by count