横向
1
Math using letters for unknown values
5
Comparison of two quantities
6
Corner point of a polygon
7
Distance from center to edge of circle
10
Line touching circle at one point
11
Single numeral from 0 to 9
12
Result of raising a number to an exponent
14
Lines that never intersect
纵向
2
Line crossing from corner to corner
3
Mathematical statement of equality
4
Proven mathematical statement
8
Number divisible only by 1 and itself
9
Number that divides evenly into another
13
Closed shape with straight sides
15
Part of a circle's circumference