Across
1
Part of a whole number
2
Exact correspondence on both sides
5
Corner point of a polygon
6
Round shape with all points equidistant
7
Longest side of a right triangle
8
Symbol representing unknown value
Down
2
Steepness of a line
3
Part of a line with two endpoints
4
Mathematical statement of equality
9
Middle value in an ordered dataset
10
Difference between highest and lowest values
11
Parts per hundred
12
U-shaped curve of a quadratic function