Across
1
Total distance around a shape
5
Space between two intersecting lines
8
Result of addition
9
Middle value in an ordered dataset
10
Number greater than zero
13
Proven mathematical statement
Down
2
The number representing nothing
3
Split into equal parts
4
Rectangular array of numbers
6
Comparison of two quantities
7
System of ordered marks for measuring
10
Parts per hundred
11
Result of raising a number to an exponent
12
Longest side of a right triangle