横向
1
Longest side of a right triangle
6
Number less than zero
7
Space between two intersecting lines
9
Math using letters for unknown values
10
Result of multiplication
11
Single numeral from 0 to 9
12
Parts per hundred
14
Middle value in an ordered dataset
纵向
2
Difference between highest and lowest values
3
Number that divides evenly into another
4
Symbol representing unknown value
5
Mathematical statement of equality
8
Line segment connecting two circle points
13
Number divisible only by 1 and itself