Across
1
Line touching circle at one point
3
U-shaped curve of a quadratic function
4
Line crossing from corner to corner
9
System of ordered marks for measuring
10
Total distance around a shape
13
Difference between highest and lowest values
Down
2
Comparison of two quantities
5
Number that divides evenly into another
6
Mathematical rule or equation
7
Number less than zero
8
Part of a circle's circumference
11
Middle value in an ordered dataset
12
Parts per hundred