Across
1
Power to which a number is raised
5
Divisible by two
6
Distance from center to edge of circle
7
Line crossing from corner to corner
8
Value that does not change
10
Mathematical rule or equation
11
The number representing nothing
12
System of ordered marks for measuring
Down
2
Rectangle with four equal sides
3
Space between two intersecting lines
4
Mathematical statement of equality
9
Line segment connecting two circle points
13
Collection of distinct elements