横向
1
The number representing nothing
3
Part of a circle's circumference
5
Proven mathematical statement
6
Line crossing from corner to corner
12
Value that does not change
纵向
2
Total distance around a shape
4
Result of multiplication
7
Number less than zero
8
System of ordered marks for measuring
9
Mathematical rule or equation
10
Number divisible only by 1 and itself
11
Difference between highest and lowest values
13
Amount of space an object occupies