横向
1
Closed shape with straight sides
3
Result of addition
6
Mathematical statement of equality
8
U-shaped curve of a quadratic function
11
Lines that never intersect
纵向
2
Math using letters for unknown values
3
Steepness of a line
4
Part of a line with two endpoints
5
Space between two intersecting lines
7
Longest side of a right triangle
9
Middle value in an ordered dataset
10
Result of multiplication
12
Line crossing from corner to corner