The cord of a circle that contains the center of that circle is a diameter of that circle.
perimeter or circumference The only answer is perimeter. The circumference is the the perimeter of a circle; the distance around a circle.
It is a pentagon
is an arc.
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.
a bisect or bisector,
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.
Security is freedom from, or resilience against, the potential harm caused by others. Beneficiaries of security may be of persons and social groups, objects and institutions, ecosystems, or any other entity or phenomenon vulnerable to unwanted change.
What is one thousandth