marks on a number line showing where the numbers are
One way of doing it would be do put smaller tick marks in between the larger tick marks for whole numbers. So if you want to represent, 1, then 1.25, 1.50, 1.75 then 2 on a number line, you could put a large tick mark with the number '1' above it, then 3 evenly space smaller tick marks, then another large tick mark with the number '2' above it. If you have enough room, you could write the decimal numbers above the smaller tick marks, too.
I need this question to the answer?
The marks do not. It is the numbers which are next to the tick marks on the y-axis.
gridlines
no
Tick marks indicate when lines or angles are congruent.
It is exactly halfway between the tick marks that are labelled 20 and 30.
There isn't one, you shift by "feel" or by the red tick marks on your speedometer ,|,&.
tick marks
Use a ruler or tape measure.
To show it just make ticks marks. Like one tick mark for all of the sides that are congruent to this measurement. Then two tick marks for all of the sides that are the next measurement and congruent.