Across
1
Proven mathematical statement
5
Number greater than zero
6
Value that does not change
7
System of ordered marks for measuring
9
Rectangular array of numbers
12
Amount of space an object occupies
Down
2
Closed shape with straight sides
3
Exact correspondence on both sides
4
Divisible by two
8
Result of addition
10
Split into equal parts
11
Rectangle with four equal sides
13
Comparison of two quantities
14
Distance from center to edge of circle
15
Parts per hundred