Across
1
Number less than zero
6
Exact correspondence on both sides
8
Value that does not change
9
Rectangular array of numbers
10
System of ordered marks for measuring
11
Corner point of a polygon
Down
2
Part of a whole number
3
Power to which a number is raised
4
Number with digits after a point
5
Result of raising a number to an exponent
6
Rectangle with four equal sides
7
Repeated addition