Across
1
Number less than zero
4
Closed shape with straight sides
5
Result of multiplication
7
Distance from center to edge of circle
8
Difference between highest and lowest values
9
Part of a circle's circumference
10
Collection of distinct elements
Down
2
Longest side of a right triangle
3
Line touching circle at one point
4
Total distance around a shape
6
Math using letters for unknown values
10
Part of a line with two endpoints
11
Rectangle with four equal sides
12
Reference line in a graph
13
Comparison of two quantities