Across
1
Steepness of a line
2
Part of a circle's circumference
4
Mathematical rule or equation
6
Amount of space an object occupies
7
Power to which a number is raised
Down
1
Collection of distinct elements
2
Space between two intersecting lines
3
Number that divides evenly into another
5
Exact correspondence on both sides
8
Split into equal parts
9
Corner point of a polygon