Across
1
Amount of space an object occupies
4
Round shape with all points equidistant
5
Number with digits after a point
7
Math using letters for unknown values
8
Total distance around a shape
10
Number that divides evenly into another
11
Space between two intersecting lines
12
Difference between highest and lowest values
Down
2
Longest side of a right triangle
3
Steepness of a line
5
Single numeral from 0 to 9
6
Split into equal parts
9
U-shaped curve of a quadratic function