Across
1
Number less than zero
3
Number that divides evenly into another
4
Line segment connecting two circle points
5
Rectangle with four equal sides
7
Divisible by two
8
Repeated addition
Down
2
Line crossing from corner to corner
3
Mathematical rule or equation
5
Collection of distinct elements
6
Corner point of a polygon
9
Number divisible only by 1 and itself
10
Result of raising a number to an exponent
11
Distance from center to edge of circle
12
Result of multiplication
13
Symbol representing unknown value