Across
1
Longest side of a right triangle
5
Part of a circle's circumference
6
Parts per hundred
7
Line touching circle at one point
10
Result of addition
11
Rectangle with four equal sides
Down
2
Value that does not change
3
Split into equal parts
4
Mathematical rule or equation
5
Math using letters for unknown values
8
Total distance around a shape
9
Middle value in an ordered dataset