Across
1
Space between two intersecting lines
3
Closed shape with straight sides
4
Number greater than zero
5
Divisible by two
6
Total distance around a shape
7
Round shape with all points equidistant
14
Distance from center to edge of circle
Down
2
Three-sided polygon
3
U-shaped curve of a quadratic function
8
Corner point of a polygon
9
Line segment connecting two circle points
10
Exact correspondence on both sides
11
Symbol representing unknown value
12
Rectangular array of numbers
13
Part of a circle's circumference