Across
1
Number greater than zero
5
Part of a whole number
6
Difference between highest and lowest values
7
Corner point of a polygon
8
Rectangle with four equal sides
9
Exact correspondence on both sides
10
Line touching circle at one point
12
Math using letters for unknown values
13
System of ordered marks for measuring
Down
1
Total distance around a shape
2
Comparison of two quantities
3
Reference line in a graph
4
Line crossing from corner to corner
11
Line segment connecting two circle points