Across
1
Longest side of a right triangle
5
Single numeral from 0 to 9
8
Line segment connecting two circle points
9
Number with digits after a point
10
Parts per hundred
11
Part of a circle's circumference
12
Line touching circle at one point
14
The number representing nothing
15
Power to which a number is raised
Down
2
Collection of distinct elements
3
Result of multiplication
4
Part of a line with two endpoints
6
Visual representation of data
7
System of ordered marks for measuring
13
Three-sided polygon