横向
1
Part of a line with two endpoints
4
Result of multiplication
5
Value that does not change
7
Round shape with all points equidistant
9
Sum divided by count
13
Number that divides evenly into another
纵向
1
Steepness of a line
2
Comparison of two quantities
3
Math using letters for unknown values
6
Visual representation of data
8
Rectangular array of numbers
10
Exact correspondence on both sides
11
Line touching circle at one point
12
System of ordered marks for measuring