Across
1
Proven mathematical statement
4
Sum divided by count
5
System of ordered marks for measuring
6
Rectangular array of numbers
7
Split into equal parts
8
Part of a whole number
Down
2
Lines that never intersect
3
Corner point of a polygon
4
Math using letters for unknown values
5
Exact correspondence on both sides
7
Number with digits after a point
9
Difference between highest and lowest values
10
Distance from center to edge of circle
11
Rectangle with four equal sides