横向
1
Mathematical rule or equation
4
Exact correspondence on both sides
6
Math using letters for unknown values
7
Result of addition
9
Sum divided by count
12
U-shaped curve of a quadratic function
14
Part of a whole number
纵向
2
Longest side of a right triangle
3
Amount of space an object occupies
5
Visual representation of data
8
Number that divides evenly into another
9
Space between two intersecting lines
10
Distance from center to edge of circle
11
Single numeral from 0 to 9
13
Mathematical statement of equality