Across
1
Part of a line with two endpoints
6
Number divisible only by 1 and itself
8
Corner point of a polygon
9
Single numeral from 0 to 9
10
Power to which a number is raised
11
Middle value in an ordered dataset
13
Repeated addition
Down
2
Closed shape with straight sides
3
Number greater than zero
4
Proven mathematical statement
5
Total distance around a shape
7
Line segment connecting two circle points
12
U-shaped curve of a quadratic function