Across
1
Mathematical rule or equation
3
Exact correspondence on both sides
5
Comparison of two quantities
6
Round shape with all points equidistant
7
Part of a line with two endpoints
8
Amount of space an object occupies
10
Math using letters for unknown values
Down
2
Line crossing from corner to corner
3
Result of addition
4
Sum divided by count
9
Line segment connecting two circle points
11
Divisible by two
12
Number that divides evenly into another