横向
1
Part of a line with two endpoints
4
Steepness of a line
5
System of ordered marks for measuring
7
Math using letters for unknown values
9
Rectangular array of numbers
纵向
2
Distance from center to edge of circle
3
Lines that never intersect
6
Number less than zero
8
U-shaped curve of a quadratic function
10
Comparison of two quantities
11
Number that divides evenly into another