Across
1
Sum divided by count
5
Middle value in an ordered dataset
6
Lines that never intersect
7
Longest side of a right triangle
8
Amount of space an object occupies
Down
2
Line crossing from corner to corner
3
Exact correspondence on both sides
4
Closed shape with straight sides
9
Difference between highest and lowest values
10
Part of a whole number
11
Math using letters for unknown values
12
Steepness of a line
13
Part of a circle's circumference
14
System of ordered marks for measuring