Across
1
Steepness of a line
3
Collection of distinct elements
4
Repeated addition
6
Middle value in an ordered dataset
7
Closed shape with straight sides
10
Part of a circle's circumference
Down
2
Mathematical rule or equation
3
Exact correspondence on both sides
5
Split into equal parts
8
U-shaped curve of a quadratic function
9
Space between two intersecting lines
11
Mathematical statement of equality
12
Part of a line with two endpoints