Across
1
Reference line in a graph
3
Result of multiplication
7
Number that divides evenly into another
9
Part of a line with two endpoints
10
Collection of distinct elements
11
Space between two intersecting lines
12
Total distance around a shape
13
Rectangular array of numbers
14
Three-sided polygon
Down
2
Comparison of two quantities
4
Line crossing from corner to corner
5
Proven mathematical statement
6
Repeated addition
8
Sum divided by count