Across
1
Result of addition
4
Line crossing from corner to corner
5
Part of a line with two endpoints
6
Amount of space an object occupies
9
Steepness of a line
10
System of ordered marks for measuring
11
Closed shape with straight sides
Down
2
Middle value in an ordered dataset
3
Longest side of a right triangle
5
Collection of distinct elements
7
Result of multiplication
8
Part of a circle's circumference
12
Reference line in a graph