Across
1
Result of multiplication
4
Total distance around a shape
5
Exact correspondence on both sides
7
Result of raising a number to an exponent
9
Space between two intersecting lines
12
Difference between highest and lowest values
Down
2
Repeated addition
3
Three-sided polygon
5
Result of addition
6
Part of a circle's circumference
8
Line segment connecting two circle points
10
Longest side of a right triangle
11
System of ordered marks for measuring