Across
1
U-shaped curve of a quadratic function
5
Split into equal parts
6
Line touching circle at one point
8
Rectangle with four equal sides
10
Collection of distinct elements
12
The number representing nothing
Down
2
Repeated addition
3
Round shape with all points equidistant
4
Proven mathematical statement
5
Number with digits after a point
7
Parts per hundred
9
Exact correspondence on both sides
10
Part of a line with two endpoints
11
Power to which a number is raised