Across
1
Value that does not change
6
Mathematical rule or equation
7
Collection of distinct elements
8
Repeated addition
9
Number less than zero
10
Amount of space an object occupies
11
System of ordered marks for measuring
12
Split into equal parts
13
Parts per hundred
14
Space between two intersecting lines
Down
1
Line segment connecting two circle points
2
Result of addition
3
The number representing nothing
4
Proven mathematical statement
5
Power to which a number is raised