Across
1
Part of a line with two endpoints
3
Visual representation of data
7
Closed shape with straight sides
9
Single numeral from 0 to 9
10
Three-sided polygon
11
Result of addition
Down
2
Line touching circle at one point
4
Corner point of a polygon
5
Mathematical statement of equality
6
Difference between highest and lowest values
8
Longest side of a right triangle