Across
1
Number less than zero
6
U-shaped curve of a quadratic function
7
Parts per hundred
9
Reference line in a graph
11
Proven mathematical statement
12
Single numeral from 0 to 9
Down
2
Middle value in an ordered dataset
3
Rectangle with four equal sides
4
Amount of space an object occupies
5
Three-sided polygon
7
Number greater than zero
8
Mathematical statement of equality
10
Line segment connecting two circle points