Across
1
Proven mathematical statement
5
Part of a line with two endpoints
6
Corner point of a polygon
8
Amount of space an object occupies
9
Power to which a number is raised
10
Mathematical statement of equality
11
Sum divided by count
12
Line segment connecting two circle points
Down
2
Collection of distinct elements
3
Repeated addition
4
Number that divides evenly into another
5
Steepness of a line
7
Longest side of a right triangle