横向
1
The number representing nothing
4
Round shape with all points equidistant
7
Proven mathematical statement
8
Value that does not change
9
Number divisible only by 1 and itself
11
Symbol representing unknown value
纵向
2
Part of a line with two endpoints
3
Power to which a number is raised
5
Mathematical rule or equation
6
Part of a circle's circumference
10
Rectangle with four equal sides
12
Amount of space an object occupies