Across
1
Three-sided polygon
6
Reference line in a graph
7
Amount of space an object occupies
8
Part of a whole number
9
Middle value in an ordered dataset
10
Sum divided by count
11
Divisible by two
Down
2
Distance from center to edge of circle
3
Result of multiplication
4
Lines that never intersect
5
Symbol representing unknown value
12
Number with digits after a point