Across
1
Lines that never intersect
3
Line crossing from corner to corner
4
Value that does not change
6
Round shape with all points equidistant
7
Parts per hundred
Down
1
Closed shape with straight sides
2
Steepness of a line
3
Split into equal parts
5
The number representing nothing
8
Number with digits after a point
9
Math using letters for unknown values
10
Result of multiplication
11
Three-sided polygon