Across
1
Line crossing from corner to corner
3
Proven mathematical statement
4
Corner point of a polygon
6
Rectangular array of numbers
7
The number representing nothing
11
Space between two intersecting lines
12
Result of raising a number to an exponent
Down
2
Part of a line with two endpoints
4
Amount of space an object occupies
5
Line segment connecting two circle points
8
Total distance around a shape
9
Middle value in an ordered dataset
10
Reference line in a graph