Across
1
Steepness of a line
2
Total distance around a shape
4
Power to which a number is raised
5
System of ordered marks for measuring
6
Line segment connecting two circle points
11
U-shaped curve of a quadratic function
12
Result of raising a number to an exponent
Down
2
Lines that never intersect
3
Symbol representing unknown value
7
Reference line in a graph
8
Number divisible only by 1 and itself
9
Math using letters for unknown values
10
Part of a line with two endpoints