Across
1
Closed shape with straight sides
2
Exact correspondence on both sides
4
Lines that never intersect
6
Rectangle with four equal sides
10
Parts per hundred
Down
2
System of ordered marks for measuring
3
Steepness of a line
5
Power to which a number is raised
7
Number with digits after a point
8
Rectangular array of numbers
9
Space between two intersecting lines