横向
1
Split into equal parts
3
Lines that never intersect
7
Mathematical statement of equality
8
Number greater than zero
11
Three-sided polygon
12
Power to which a number is raised
纵向
2
Math using letters for unknown values
4
Amount of space an object occupies
5
Proven mathematical statement
6
Value that does not change
9
Steepness of a line
10
Corner point of a polygon