横向
1
Closed shape with straight sides
5
Sum divided by count
6
System of ordered marks for measuring
7
Rectangle with four equal sides
8
Longest side of a right triangle
9
Comparison of two quantities
10
Number that divides evenly into another
15
Three-sided polygon
纵向
2
Number less than zero
3
Power to which a number is raised
4
Lines that never intersect
11
Total distance around a shape
12
Space between two intersecting lines
13
Split into equal parts
14
Divisible by two