横向
1
Space between two intersecting lines
5
Collection of distinct elements
6
Divisible by two
7
Math using letters for unknown values
8
Result of raising a number to an exponent
9
Part of a circle's circumference
10
Repeated addition
11
Distance from center to edge of circle
纵向
2
Three-sided polygon
3
Single numeral from 0 to 9
4
Symbol representing unknown value
6
Mathematical statement of equality
12
Number divisible only by 1 and itself