Across
1
Divisible by two
4
Steepness of a line
5
Mathematical rule or equation
8
Round shape with all points equidistant
9
Exact correspondence on both sides
12
Lines that never intersect
13
Number that divides evenly into another
Down
2
Closed shape with straight sides
3
System of ordered marks for measuring
6
The number representing nothing
7
Line segment connecting two circle points
10
Line touching circle at one point
11
Longest side of a right triangle
14
Space between two intersecting lines
15
Visual representation of data