Across
1
Number with digits after a point
3
Rectangle with four equal sides
4
Divisible by two
5
Exact correspondence on both sides
8
Distance from center to edge of circle
10
The number representing nothing
Down
2
Amount of space an object occupies
3
System of ordered marks for measuring
6
Result of raising a number to an exponent
7
Part of a whole number
9
Middle value in an ordered dataset
11
Number divisible only by 1 and itself
12
Rectangular array of numbers