Across
1
Line crossing from corner to corner
5
Repeated addition
6
Sum divided by count
8
Proven mathematical statement
10
Corner point of a polygon
Down
2
Number divisible only by 1 and itself
3
Power to which a number is raised
4
Part of a circle's circumference
7
Difference between highest and lowest values
9
Lines that never intersect
11
Math using letters for unknown values
12
Result of multiplication
13
System of ordered marks for measuring