横向
1
Rectangle with four equal sides
4
Divisible by two
5
Line touching circle at one point
6
Distance from center to edge of circle
7
Part of a circle's circumference
纵向
2
Three-sided polygon
3
Symbol representing unknown value
8
Number that divides evenly into another
9
Number divisible only by 1 and itself
10
Mathematical statement of equality
11
Mathematical rule or equation