Across
1
Total distance around a shape
5
Number with digits after a point
8
Line segment connecting two circle points
9
Power to which a number is raised
10
U-shaped curve of a quadratic function
11
Symbol representing unknown value
Down
1
Result of multiplication
2
Result of raising a number to an exponent
3
Part of a line with two endpoints
4
Line touching circle at one point
6
Split into equal parts
7
Mathematical rule or equation
12
Divisible by two
13
Sum divided by count