横向
1
Symbol representing unknown value
6
Total distance around a shape
7
Comparison of two quantities
8
Space between two intersecting lines
10
Math using letters for unknown values
11
Repeated addition
纵向
2
Part of a line with two endpoints
3
Middle value in an ordered dataset
4
Round shape with all points equidistant
5
U-shaped curve of a quadratic function
6
Result of raising a number to an exponent
9
Mathematical rule or equation
12
Divisible by two