Across
1
System of ordered marks for measuring
2
Closed shape with straight sides
4
Exact correspondence on both sides
5
Line touching circle at one point
6
Corner point of a polygon
7
Space between two intersecting lines
8
Sum divided by count
9
Distance from center to edge of circle
10
Power to which a number is raised
Down
1
Part of a line with two endpoints
2
Parts per hundred
3
Mathematical statement of equality