Across
1
Number greater than zero
5
Exact correspondence on both sides
6
Part of a line with two endpoints
7
Line touching circle at one point
8
Part of a whole number
9
U-shaped curve of a quadratic function
12
Power to which a number is raised
Down
1
Closed shape with straight sides
2
Distance from center to edge of circle
3
Single numeral from 0 to 9
4
Mathematical statement of equality
6
Collection of distinct elements
10
Value that does not change
11
Corner point of a polygon