Across
1
Mathematical statement of equality
5
Part of a circle's circumference
7
Single numeral from 0 to 9
8
Amount of space an object occupies
9
Closed shape with straight sides
Down
2
Number that divides evenly into another
3
Space between two intersecting lines
4
Divisible by two
6
Distance from center to edge of circle
10
U-shaped curve of a quadratic function
11
Three-sided polygon