Across
1
Sum divided by count
4
Lines that never intersect
5
Power to which a number is raised
6
U-shaped curve of a quadratic function
7
Three-sided polygon
8
Result of addition
Down
1
Part of a circle's circumference
2
Line touching circle at one point
3
Symbol representing unknown value
4
Result of raising a number to an exponent
8
Exact correspondence on both sides
9
Collection of distinct elements
10
Divisible by two
11
Reference line in a graph