横向
1
Result of addition
3
Number that divides evenly into another
4
Collection of distinct elements
6
Lines that never intersect
7
Divisible by two
9
Space between two intersecting lines
纵向
1
Steepness of a line
2
Number with digits after a point
5
Rectangle with four equal sides
8
Number less than zero
10
Rectangular array of numbers
11
Line crossing from corner to corner
12
Amount of space an object occupies