Across
1
Round shape with all points equidistant
4
Distance from center to edge of circle
5
Difference between highest and lowest values
8
Mathematical rule or equation
9
Steepness of a line
11
Number less than zero
Down
2
Split into equal parts
3
Part of a whole number
6
Three-sided polygon
7
Longest side of a right triangle
10
Amount of space an object occupies