Across
1
Reference line in a graph
2
Mathematical rule or equation
4
Number less than zero
5
Closed shape with straight sides
6
Result of addition
8
Math using letters for unknown values
10
Proven mathematical statement
Down
1
Space between two intersecting lines
3
Part of a whole number
6
System of ordered marks for measuring
7
Collection of distinct elements
9
Divisible by two
11
Split into equal parts