Across
1
Line crossing from corner to corner
4
Lines that never intersect
6
Proven mathematical statement
10
Parts per hundred
11
Rectangle with four equal sides
Down
2
Difference between highest and lowest values
3
Rectangular array of numbers
5
Space between two intersecting lines
7
Steepness of a line
8
Corner point of a polygon
9
Result of addition
10
Total distance around a shape