横向
1
Collection of distinct elements
3
Single numeral from 0 to 9
4
Amount of space an object occupies
7
Three-sided polygon
8
Line crossing from corner to corner
10
Line segment connecting two circle points
11
System of ordered marks for measuring
纵向
2
Proven mathematical statement
5
Result of addition
6
Closed shape with straight sides
9
Part of a whole number