横向
1
Parts per hundred
5
Value that does not change
6
Line segment connecting two circle points
8
Mathematical rule or equation
9
Number divisible only by 1 and itself
10
Visual representation of data
11
Number less than zero
13
Lines that never intersect
纵向
1
U-shaped curve of a quadratic function
2
Collection of distinct elements
3
Distance from center to edge of circle
4
Number that divides evenly into another
7
Space between two intersecting lines
12
The number representing nothing