Across
1
Sum divided by count
5
Line crossing from corner to corner
6
Repeated addition
7
Mathematical rule or equation
9
Line segment connecting two circle points
13
Amount of space an object occupies
Down
2
Lines that never intersect
3
Part of a line with two endpoints
4
Line touching circle at one point
5
Number with digits after a point
8
U-shaped curve of a quadratic function
10
Value that does not change
11
Closed shape with straight sides
12
Split into equal parts