横向
1
Part of a whole number
5
Lines that never intersect
6
Math using letters for unknown values
10
Visual representation of data
11
Part of a line with two endpoints
12
Amount of space an object occupies
纵向
2
Line segment connecting two circle points
3
Symbol representing unknown value
4
Part of a circle's circumference
7
Number with digits after a point
8
Rectangular array of numbers
9
Difference between highest and lowest values
13
Line crossing from corner to corner