Across
1
Collection of distinct elements
3
Symbol representing unknown value
6
Repeated addition
7
Line touching circle at one point
8
Space between two intersecting lines
9
Total distance around a shape
Down
1
Result of addition
2
Split into equal parts
3
Amount of space an object occupies
4
Power to which a number is raised
5
Math using letters for unknown values
10
Sum divided by count