Across
1
Single numeral from 0 to 9
3
Mathematical rule or equation
6
Collection of distinct elements
7
Corner point of a polygon
9
Sum divided by count
10
Lines that never intersect
12
Number with digits after a point
14
Parts per hundred
15
Line segment connecting two circle points
Down
2
Power to which a number is raised
4
Value that does not change
5
Number less than zero
8
Rectangular array of numbers
11
Amount of space an object occupies
13
Number divisible only by 1 and itself