Across
1
Single numeral from 0 to 9
4
Steepness of a line
5
Line touching circle at one point
7
Space between two intersecting lines
8
Parts per hundred
9
Corner point of a polygon
10
Mathematical statement of equality
11
U-shaped curve of a quadratic function
Down
1
Line crossing from corner to corner
2
Value that does not change
3
Part of a line with two endpoints
6
Rectangular array of numbers