Across
1
Sum divided by count
6
Closed shape with straight sides
7
Rectangular array of numbers
8
Round shape with all points equidistant
9
Lines that never intersect
10
Number with digits after a point
Down
2
Number less than zero
3
Steepness of a line
4
System of ordered marks for measuring
5
Longest side of a right triangle
11
Amount of space an object occupies