横向
1
Symbol representing unknown value
4
Line segment connecting two circle points
5
Collection of distinct elements
6
Proven mathematical statement
10
Number divisible only by 1 and itself
纵向
2
Split into equal parts
3
Single numeral from 0 to 9
5
Exact correspondence on both sides
7
Math using letters for unknown values
8
Number with digits after a point
9
Result of raising a number to an exponent