Across
1
Number that divides evenly into another
4
Exact correspondence on both sides
5
Amount of space an object occupies
6
Line touching circle at one point
8
System of ordered marks for measuring
11
Number greater than zero
Down
2
Number less than zero
3
Closed shape with straight sides
7
Rectangular array of numbers
9
Symbol representing unknown value
10
Proven mathematical statement
12
Round shape with all points equidistant