横向
1
Line touching circle at one point
3
Mathematical rule or equation
4
Result of multiplication
7
The number representing nothing
8
Number less than zero
纵向
2
Difference between highest and lowest values
3
Number that divides evenly into another
4
U-shaped curve of a quadratic function
5
Amount of space an object occupies
6
Reference line in a graph
9
Collection of distinct elements
10
Sum divided by count
11
Line segment connecting two circle points