Across
1
Line segment connecting two circle points
4
Line touching circle at one point
7
Difference between highest and lowest values
8
Symbol representing unknown value
13
Rectangle with four equal sides
14
Single numeral from 0 to 9
Down
2
Split into equal parts
3
Part of a whole number
5
Amount of space an object occupies
6
Steepness of a line
9
Rectangular array of numbers
10
Round shape with all points equidistant
11
Number with digits after a point
12
Collection of distinct elements