横向
1
Part of a circle's circumference
2
Part of a whole number
4
Comparison of two quantities
5
Math using letters for unknown values
7
Split into equal parts
8
Result of multiplication
10
Number less than zero
12
System of ordered marks for measuring
纵向
2
Mathematical rule or equation
3
Line segment connecting two circle points
6
Divisible by two
9
Round shape with all points equidistant
11
Proven mathematical statement