Across
1
Space between two intersecting lines
3
Line touching circle at one point
4
Line crossing from corner to corner
6
Longest side of a right triangle
7
Corner point of a polygon
9
Mathematical rule or equation
10
Distance from center to edge of circle
Down
1
Part of a circle's circumference
2
Symbol representing unknown value
5
Sum divided by count
8
Parts per hundred
11
Divisible by two