Across
1
Space between two intersecting lines
4
Rectangle with four equal sides
6
Parts per hundred
10
System of ordered marks for measuring
11
Three-sided polygon
Down
2
Corner point of a polygon
3
Difference between highest and lowest values
4
Result of addition
5
Result of multiplication
7
Middle value in an ordered dataset
8
Part of a line with two endpoints
9
Sum divided by count
12
Comparison of two quantities