Across
1
Result of multiplication
5
U-shaped curve of a quadratic function
6
Lines that never intersect
7
Rectangle with four equal sides
8
Exact correspondence on both sides
11
Reference line in a graph
Down
2
Steepness of a line
3
Three-sided polygon
4
Distance from center to edge of circle
9
Parts per hundred
10
Round shape with all points equidistant