横向
1
Longest side of a right triangle
5
Number that divides evenly into another
8
Amount of space an object occupies
9
Divisible by two
10
Single numeral from 0 to 9
纵向
2
Steepness of a line
3
Rectangular array of numbers
4
Symbol representing unknown value
6
The number representing nothing
7
Result of multiplication
11
Round shape with all points equidistant
12
Difference between highest and lowest values