Across
1
Steepness of a line
5
Lines that never intersect
7
Rectangular array of numbers
8
Corner point of a polygon
9
Line crossing from corner to corner
14
Total distance around a shape
Down
2
Difference between highest and lowest values
3
Number divisible only by 1 and itself
4
Repeated addition
6
Longest side of a right triangle
10
Part of a circle's circumference
11
System of ordered marks for measuring
12
Part of a whole number
13
Three-sided polygon