Across
1
Reference line in a graph
3
Mathematical rule or equation
5
Single numeral from 0 to 9
6
Number less than zero
7
Repeated addition
Down
2
Corner point of a polygon
4
Three-sided polygon
8
Mathematical statement of equality
Reference line in a graph
Mathematical rule or equation
Single numeral from 0 to 9
Number less than zero
Repeated addition
Corner point of a polygon
Three-sided polygon
Mathematical statement of equality