perimeter or circumference The only answer is perimeter. The circumference is the the perimeter of a circle; the distance around a circle.
A graph of some kind, which could be a line graph, a bar chart, a pie chat, a pictogram, etc.
a half-line with a designated end point which extends in only one direction without stopping
A rectangle or a square.
The range is the difference between the greatest and least numbers.
A shape having the same dimensions of length, height and width is a cube. This can also be referred to as a square prism.
If you quote a concentration 'x' as so many parts per hundred, then that number does represent hundredths. It's just a fraction, x/100
A segment with end points on a circle is a chord.
Two lines cross or intersect at a point.
The circumference of a circle represents its perimeter and the distance around it.
There is no such unit.
What is one thousandth