Across
1
Power to which a number is raised
4
U-shaped curve of a quadratic function
5
Split into equal parts
6
Reference line in a graph
7
Line crossing from corner to corner
10
Total distance around a shape
12
Parts per hundred
13
Repeated addition
Down
2
Longest side of a right triangle
3
Lines that never intersect
8
Difference between highest and lowest values
9
Result of addition
11
Mathematical statement of equality