Across
1
Total distance around a shape
6
Line touching circle at one point
8
Value that does not change
9
Distance from center to edge of circle
Down
1
Result of multiplication
2
Reference line in a graph
3
Longest side of a right triangle
4
Single numeral from 0 to 9
5
Divisible by two
7
Round shape with all points equidistant
10
Rectangular array of numbers