Across
1
Distance from center to edge of circle
4
U-shaped curve of a quadratic function
6
Number less than zero
9
Visual representation of data
12
Mathematical statement of equality
13
Part of a whole number
Down
2
Symbol representing unknown value
3
Part of a line with two endpoints
5
Round shape with all points equidistant
7
System of ordered marks for measuring
8
Steepness of a line
10
Lines that never intersect
11
Mathematical rule or equation
14
Value that does not change