Across
1
Part of a line with two endpoints
3
Exact correspondence on both sides
8
Space between two intersecting lines
9
Number that divides evenly into another
11
Three-sided polygon
Down
2
Result of raising a number to an exponent
3
System of ordered marks for measuring
4
Comparison of two quantities
5
Repeated addition
6
Corner point of a polygon
7
Result of addition
10
The number representing nothing
12
Mathematical statement of equality