Across
1
Repeated addition
2
Result of addition
5
Result of multiplication
6
Rectangular array of numbers
8
Result of raising a number to an exponent
9
Divisible by two
10
Sum divided by count
11
Corner point of a polygon
Down
2
Collection of distinct elements
3
Part of a line with two endpoints
4
Parts per hundred
7
Symbol representing unknown value
12
Number with digits after a point
13
Mathematical rule or equation