横向
1
Result of multiplication
2
Visual representation of data
3
Symbol representing unknown value
5
U-shaped curve of a quadratic function
7
Corner point of a polygon
8
Exact correspondence on both sides
纵向
1
Total distance around a shape
4
Longest side of a right triangle
6
Part of a whole number
9
Value that does not change
10
Steepness of a line
11
Distance from center to edge of circle
12
Number greater than zero
13
Line touching circle at one point