Across
1
Split into equal parts
4
Exact correspondence on both sides
5
Number divisible only by 1 and itself
10
Math using letters for unknown values
Down
2
Round shape with all points equidistant
3
Comparison of two quantities
4
Steepness of a line
6
Collection of distinct elements
7
Rectangle with four equal sides
8
The number representing nothing
9
Repeated addition
11
Space between two intersecting lines