横向
1
Number that divides evenly into another
4
Total distance around a shape
5
Mathematical rule or equation
8
U-shaped curve of a quadratic function
9
Space between two intersecting lines
10
Reference line in a graph
12
Part of a line with two endpoints
纵向
2
Amount of space an object occupies
3
Lines that never intersect
6
Comparison of two quantities
7
Value that does not change
11
Round shape with all points equidistant
13
Three-sided polygon