Across
1
Part of a circle's circumference
3
Collection of distinct elements
4
Space between two intersecting lines
6
Line touching circle at one point
9
Power to which a number is raised
10
Number with digits after a point
11
Comparison of two quantities
Down
2
Three-sided polygon
3
Result of addition
5
U-shaped curve of a quadratic function
7
Amount of space an object occupies
8
Round shape with all points equidistant