横向
1
U-shaped curve of a quadratic function
6
Result of multiplication
7
Steepness of a line
8
System of ordered marks for measuring
10
Rectangular array of numbers
12
Visual representation of data
纵向
2
Number less than zero
3
Proven mathematical statement
4
Space between two intersecting lines
5
Mathematical rule or equation
8
Part of a line with two endpoints
9
Difference between highest and lowest values
11
Distance from center to edge of circle
13
The number representing nothing