Across
1
Line crossing from corner to corner
5
Total distance around a shape
6
Number divisible only by 1 and itself
7
Power to which a number is raised
8
Rectangle with four equal sides
10
Amount of space an object occupies
Down
1
Split into equal parts
2
Divisible by two
3
Value that does not change
4
Sum divided by count
9
Symbol representing unknown value