横向
1
Reference line in a graph
4
Proven mathematical statement
5
Closed shape with straight sides
6
Mathematical statement of equality
8
Longest side of a right triangle
纵向
2
Middle value in an ordered dataset
3
Repeated addition
5
Result of raising a number to an exponent
7
Part of a line with two endpoints
9
Part of a whole number
10
Collection of distinct elements
11
Rectangular array of numbers
12
Comparison of two quantities
13
Number divisible only by 1 and itself