横向
1
Rectangular array of numbers
4
Part of a line with two endpoints
5
Symbol representing unknown value
10
Mathematical rule or equation
11
Proven mathematical statement
纵向
2
Three-sided polygon
3
Comparison of two quantities
6
Middle value in an ordered dataset
7
Visual representation of data
8
Number divisible only by 1 and itself
9
U-shaped curve of a quadratic function
12
Closed shape with straight sides