Across
1
Line crossing from corner to corner
5
Lines that never intersect
8
Amount of space an object occupies
9
Line segment connecting two circle points
10
Proven mathematical statement
11
Single numeral from 0 to 9
Down
2
Rectangular array of numbers
3
Three-sided polygon
4
Number that divides evenly into another
6
Divisible by two
7
Number with digits after a point