Across
1
Line segment connecting two circle points
5
Rectangular array of numbers
6
Amount of space an object occupies
8
Repeated addition
9
Proven mathematical statement
10
Divisible by two
11
Difference between highest and lowest values
12
Rectangle with four equal sides
Down
2
Distance from center to edge of circle
3
Longest side of a right triangle
4
Part of a circle's circumference
7
Closed shape with straight sides
13
Symbol representing unknown value
14
Result of addition