Across
1
Exact correspondence on both sides
5
Corner point of a polygon
6
Part of a circle's circumference
7
Line crossing from corner to corner
9
Mathematical statement of equality
10
Power to which a number is raised
Down
2
Round shape with all points equidistant
3
Value that does not change
4
The number representing nothing
5
Amount of space an object occupies
8
Symbol representing unknown value