横向
1
Proven mathematical statement
4
Part of a whole number
5
Number less than zero
9
Symbol representing unknown value
11
Line crossing from corner to corner
纵向
1
Three-sided polygon
2
Middle value in an ordered dataset
3
Round shape with all points equidistant
6
U-shaped curve of a quadratic function
7
Number divisible only by 1 and itself
8
Math using letters for unknown values
10
Mathematical statement of equality
12
Reference line in a graph