横向
1
Exact correspondence on both sides
2
Line crossing from corner to corner
4
System of ordered marks for measuring
8
Result of raising a number to an exponent
10
Lines that never intersect
13
Sum divided by count
纵向
2
Split into equal parts
3
Longest side of a right triangle
5
Proven mathematical statement
6
Symbol representing unknown value
7
Distance from center to edge of circle
9
Mathematical rule or equation
11
Collection of distinct elements
12
Number with digits after a point