Across
1
Line segment connecting two circle points
3
Total distance around a shape
4
Corner point of a polygon
5
Result of addition
7
Longest side of a right triangle
8
Line touching circle at one point
Down
2
Distance from center to edge of circle
4
Amount of space an object occupies
6
Part of a line with two endpoints
9
Number divisible only by 1 and itself
10
Exact correspondence on both sides