From the toolbar on the top of your screen click Edit > Special Characters. Now click Math Symbols and on the second row 4th from the left you will find this ∅ farther down you will find this ⊘. Just click the one you want and drag it to where you want to place it. This works on all applicatons and on Safari.
Izzy and Amie made the zero with a line through it!
I and A!
How about "is always zero"?
The letter 'O' with a slash through it is the number zero.
sometimes zero
A straight line passes through the x-axis one time, if its slope is non-zero, or not at all, if its slope is zero.
The line going through an "o" helps to clarify the letter o, from the number zero.
The symbol is a zero with a diagonal line through it.
Greenwich, England
The slope is zero. Slope is rise over run, the rise is zero, so zero divided by anything is zero.
zero
The y-axis on a graph is the line that runs up and down through zero. The x-axis is the line that runs horizontally through zero. Both lines help people make their measurements in math.