Across
1
Part of a whole number
5
Total distance around a shape
9
Divisible by two
11
Lines that never intersect
12
Line touching circle at one point
13
Visual representation of data
Down
2
Longest side of a right triangle
3
The number representing nothing
4
Parts per hundred
6
Symbol representing unknown value
7
Rectangle with four equal sides
8
Proven mathematical statement
10
Power to which a number is raised