Across
1
Collection of distinct elements
2
Lines that never intersect
3
Line segment connecting two circle points
4
Number that divides evenly into another
7
Rectangular array of numbers
8
Number divisible only by 1 and itself
10
Symbol representing unknown value
Down
1
System of ordered marks for measuring
2
Parts per hundred
5
Comparison of two quantities
6
Part of a circle's circumference
9
Distance from center to edge of circle
11
Steepness of a line