横向
1
Longest side of a right triangle
5
Number divisible only by 1 and itself
6
Math using letters for unknown values
7
Lines that never intersect
8
Reference line in a graph
15
Sum divided by count
纵向
2
Power to which a number is raised
3
Collection of distinct elements
4
Number with digits after a point
9
Difference between highest and lowest values
10
Value that does not change
11
Mathematical rule or equation
12
Three-sided polygon
13
Rectangle with four equal sides
14
Divisible by two