横向
1
U-shaped curve of a quadratic function
3
Part of a circle's circumference
5
Middle value in an ordered dataset
6
Part of a whole number
7
Line touching circle at one point
9
Lines that never intersect
纵向
1
Number divisible only by 1 and itself
2
Distance from center to edge of circle
3
Space between two intersecting lines
4
Result of multiplication
8
Math using letters for unknown values