横向
1
Part of a circle's circumference
4
Collection of distinct elements
5
Part of a line with two endpoints
6
Three-sided polygon
7
Math using letters for unknown values
13
Comparison of two quantities
纵向
2
Mathematical statement of equality
3
Number that divides evenly into another
8
Amount of space an object occupies
9
Number divisible only by 1 and itself
10
Visual representation of data
11
Space between two intersecting lines
12
Reference line in a graph