Across
1
Proven mathematical statement
5
Middle value in an ordered dataset
6
Space between two intersecting lines
7
U-shaped curve of a quadratic function
8
Rectangle with four equal sides
10
Part of a whole number
Down
2
Part of a line with two endpoints
3
The number representing nothing
4
Number with digits after a point
7
Number divisible only by 1 and itself
9
Difference between highest and lowest values
11
Divisible by two