Across
1
Line crossing from corner to corner
5
Proven mathematical statement
7
Corner point of a polygon
8
U-shaped curve of a quadratic function
9
Single numeral from 0 to 9
10
Number with digits after a point
Down
2
Line segment connecting two circle points
3
Number greater than zero
4
Line touching circle at one point
5
Three-sided polygon
6
Rectangular array of numbers