横向
1
Sum divided by count
4
Value that does not change
5
Math using letters for unknown values
8
Corner point of a polygon
9
Closed shape with straight sides
10
Split into equal parts
纵向
1
Part of a circle's circumference
2
The number representing nothing
3
Distance from center to edge of circle
5
Space between two intersecting lines
6
Part of a line with two endpoints
7
Difference between highest and lowest values
11
Mathematical statement of equality