Across
1
Mathematical statement of equality
5
Number less than zero
6
Line crossing from corner to corner
7
Reference line in a graph
8
Distance from center to edge of circle
9
Round shape with all points equidistant
11
Closed shape with straight sides
12
Number with digits after a point
Down
2
Part of a whole number
3
Three-sided polygon
4
Result of multiplication
10
Collection of distinct elements