Across
1
Line crossing from corner to corner
3
Line segment connecting two circle points
7
Divisible by two
8
System of ordered marks for measuring
9
Three-sided polygon
Down
2
Number divisible only by 1 and itself
3
Round shape with all points equidistant
4
Difference between highest and lowest values
5
Power to which a number is raised
6
Part of a whole number