横向
1
Space between two intersecting lines
3
Steepness of a line
5
Part of a circle's circumference
6
Rectangular array of numbers
10
Repeated addition
11
Sum divided by count
纵向
2
Amount of space an object occupies
4
Part of a whole number
7
Lines that never intersect
8
Distance from center to edge of circle
9
Number greater than zero