横向
1
Symbol representing unknown value
5
System of ordered marks for measuring
6
U-shaped curve of a quadratic function
7
Distance from center to edge of circle
8
Visual representation of data
10
Parts per hundred
12
Split into equal parts
纵向
2
Number that divides evenly into another
3
Longest side of a right triangle
4
Rectangle with four equal sides
9
Math using letters for unknown values
11
Rectangular array of numbers
13
Lines that never intersect