Across
1
Steepness of a line
4
Part of a whole number
6
Round shape with all points equidistant
7
Single numeral from 0 to 9
8
Proven mathematical statement
12
System of ordered marks for measuring
Down
2
Line segment connecting two circle points
3
Symbol representing unknown value
5
Power to which a number is raised
9
Line touching circle at one point
10
Middle value in an ordered dataset
11
Reference line in a graph