Across
1
Space between two intersecting lines
4
Amount of space an object occupies
5
Line touching circle at one point
7
Repeated addition
8
Math using letters for unknown values
10
Longest side of a right triangle
13
Proven mathematical statement
Down
2
Exact correspondence on both sides
3
Parts per hundred
6
Lines that never intersect
9
Value that does not change
11
Part of a circle's circumference
12
Visual representation of data