Across
1
Number divisible only by 1 and itself
5
Proven mathematical statement
6
Closed shape with straight sides
7
Difference between highest and lowest values
8
Lines that never intersect
Down
2
Repeated addition
3
Longest side of a right triangle
4
Split into equal parts
9
Amount of space an object occupies
10
Number greater than zero
11
Total distance around a shape