Across
1
The number representing nothing
4
Exact correspondence on both sides
5
Three-sided polygon
6
Proven mathematical statement
7
Closed shape with straight sides
Down
2
Corner point of a polygon
3
Power to which a number is raised
4
Collection of distinct elements
8
Divisible by two
9
Result of raising a number to an exponent
10
Part of a line with two endpoints
11
Visual representation of data
12
Number less than zero