Across
1
Part of a circle's circumference
2
Symbol representing unknown value
4
Number greater than zero
5
U-shaped curve of a quadratic function
6
Comparison of two quantities
7
Line segment connecting two circle points
10
Difference between highest and lowest values
11
Split into equal parts
12
Rectangular array of numbers
Down
1
Reference line in a graph
3
Math using letters for unknown values
4
Total distance around a shape
8
Line crossing from corner to corner
9
Exact correspondence on both sides