Across
1
Mathematical rule or equation
4
Split into equal parts
6
Math using letters for unknown values
7
Longest side of a right triangle
8
Space between two intersecting lines
9
The number representing nothing
10
System of ordered marks for measuring
11
Rectangle with four equal sides
Down
2
Repeated addition
3
Reference line in a graph
5
Total distance around a shape
12
Power to which a number is raised