Across
1
Amount of space an object occupies
5
Sum divided by count
6
Reference line in a graph
7
Line crossing from corner to corner
10
Line touching circle at one point
12
Split into equal parts
Down
2
Result of addition
3
Result of multiplication
4
Mathematical statement of equality
8
Number divisible only by 1 and itself
9
Corner point of a polygon
11
Total distance around a shape