横向
1
U-shaped curve of a quadratic function
3
Collection of distinct elements
7
Result of raising a number to an exponent
9
The number representing nothing
11
Mathematical rule or equation
12
Round shape with all points equidistant
13
Result of multiplication
纵向
2
Mathematical statement of equality
4
Power to which a number is raised
5
Line crossing from corner to corner
6
Value that does not change
8
Line touching circle at one point
10
Difference between highest and lowest values