Across
1
Distance from center to edge of circle
3
Closed shape with straight sides
4
Amount of space an object occupies
6
Number divisible only by 1 and itself
9
U-shaped curve of a quadratic function
10
Rectangular array of numbers
Down
2
Part of a line with two endpoints
5
Mathematical rule or equation
7
Round shape with all points equidistant
8
Difference between highest and lowest values