Across
1
The number representing nothing
3
Value that does not change
4
Divisible by two
5
U-shaped curve of a quadratic function
6
Difference between highest and lowest values
Down
2
Amount of space an object occupies
3
Line segment connecting two circle points
7
Split into equal parts
8
Rectangle with four equal sides
9
Number with digits after a point
10
Number greater than zero
11
Part of a line with two endpoints
12
Part of a circle's circumference
13
Middle value in an ordered dataset