Across
1
Exact correspondence on both sides
5
Number with digits after a point
6
The number representing nothing
7
Repeated addition
8
Parts per hundred
10
Power to which a number is raised
Down
1
System of ordered marks for measuring
2
Rectangular array of numbers
3
Longest side of a right triangle
4
Number divisible only by 1 and itself
9
Corner point of a polygon
11
Total distance around a shape