横向
1
Divisible by two
3
Distance from center to edge of circle
4
U-shaped curve of a quadratic function
6
Line touching circle at one point
10
Result of raising a number to an exponent
11
Number divisible only by 1 and itself
14
Number with digits after a point
15
Math using letters for unknown values
纵向
2
Part of a whole number
5
Sum divided by count
7
Steepness of a line
8
System of ordered marks for measuring
9
Closed shape with straight sides
12
Reference line in a graph
13
Corner point of a polygon