横向
1
Rectangular array of numbers
4
Line touching circle at one point
5
Number greater than zero
8
Math using letters for unknown values
9
Mathematical rule or equation
纵向
2
Corner point of a polygon
3
Single numeral from 0 to 9
5
U-shaped curve of a quadratic function
6
Amount of space an object occupies
7
Reference line in a graph
10
Part of a line with two endpoints