横向
1
Number with digits after a point
4
Sum divided by count
5
Result of raising a number to an exponent
11
Middle value in an ordered dataset
12
Rectangular array of numbers
纵向
2
Math using letters for unknown values
3
Mathematical rule or equation
6
Space between two intersecting lines
7
Difference between highest and lowest values
8
The number representing nothing
9
Corner point of a polygon
10
Line segment connecting two circle points
13
Amount of space an object occupies