横向
1
Single numeral from 0 to 9
3
Longest side of a right triangle
4
Part of a circle's circumference
5
Repeated addition
7
Number that divides evenly into another
11
Corner point of a polygon
12
Sum divided by count
纵向
2
Proven mathematical statement
6
Round shape with all points equidistant
8
Result of raising a number to an exponent
9
Steepness of a line
10
Collection of distinct elements