横向
1
Space between two intersecting lines
3
Split into equal parts
6
System of ordered marks for measuring
7
Part of a circle's circumference
8
Number divisible only by 1 and itself
10
Number less than zero
纵向
1
Sum divided by count
2
Round shape with all points equidistant
4
Amount of space an object occupies
5
Distance from center to edge of circle
9
U-shaped curve of a quadratic function