Across
1
Number divisible only by 1 and itself
4
Longest side of a right triangle
5
Split into equal parts
6
Total distance around a shape
7
Proven mathematical statement
8
Sum divided by count
Down
1
U-shaped curve of a quadratic function
2
Number with digits after a point
3
Symbol representing unknown value
9
Power to which a number is raised
10
Three-sided polygon
11
Distance from center to edge of circle
12
Repeated addition
13
Visual representation of data