Across
1
Part of a line with two endpoints
4
Amount of space an object occupies
5
The number representing nothing
9
Part of a circle's circumference
10
Collection of distinct elements
12
Mathematical statement of equality
Down
2
Corner point of a polygon
3
Proven mathematical statement
6
Number that divides evenly into another
7
Power to which a number is raised
8
Result of addition
11
Result of multiplication
13
Closed shape with straight sides