Across
1
Math using letters for unknown values
4
Proven mathematical statement
5
Collection of distinct elements
6
Rectangular array of numbers
8
Space between two intersecting lines
Down
2
Amount of space an object occupies
3
Corner point of a polygon
4
Line touching circle at one point
7
Distance from center to edge of circle
9
Divisible by two
10
Reference line in a graph
11
Exact correspondence on both sides