横向
1
U-shaped curve of a quadratic function
4
Value that does not change
5
Three-sided polygon
6
Line crossing from corner to corner
7
Mathematical rule or equation
8
Result of multiplication
纵向
2
Visual representation of data
3
Difference between highest and lowest values
4
Round shape with all points equidistant
9
Proven mathematical statement
10
Reference line in a graph
11
Exact correspondence on both sides
12
The number representing nothing