Across
1
Line touching circle at one point
3
System of ordered marks for measuring
5
Difference between highest and lowest values
6
Divisible by two
7
Power to which a number is raised
11
Part of a whole number
Down
2
Symbol representing unknown value
3
Rectangle with four equal sides
4
Corner point of a polygon
8
Number that divides evenly into another
9
Proven mathematical statement
10
Steepness of a line