Across
1
Space between two intersecting lines
3
Part of a line with two endpoints
4
Parts per hundred
5
U-shaped curve of a quadratic function
7
Mathematical rule or equation
8
Divisible by two
12
Proven mathematical statement
13
Total distance around a shape
Down
2
Line crossing from corner to corner
3
Collection of distinct elements
6
Sum divided by count
9
Number that divides evenly into another
10
Difference between highest and lowest values
11
Round shape with all points equidistant