Across
1
Rectangle with four equal sides
4
Divisible by two
5
Round shape with all points equidistant
6
Power to which a number is raised
7
Comparison of two quantities
9
Sum divided by count
11
Parts per hundred
12
Part of a line with two endpoints
Down
2
Symbol representing unknown value
3
Corner point of a polygon
5
Value that does not change
8
Split into equal parts
10
System of ordered marks for measuring