横向
1
Power to which a number is raised
4
Round shape with all points equidistant
7
Steepness of a line
8
U-shaped curve of a quadratic function
9
Single numeral from 0 to 9
10
Collection of distinct elements
12
Sum divided by count
纵向
2
Rectangular array of numbers
3
System of ordered marks for measuring
5
Number greater than zero
6
Space between two intersecting lines
11
Corner point of a polygon
13
Repeated addition
14
Number divisible only by 1 and itself
15
Math using letters for unknown values