So now let's talk about the rotate command so the rotate command is on modified panel.
And right here we have this rotate tool so select this.
And now we need to select the object which we want to rotate.
In this case I'll start with a line on a left.
So I'm going to click on this line and add presenter.
Now AutoCAD will prompt you to specify base point so the base point is a fixed point and you can also
call it a pivot point about which the object will rotate.
In this case I'll select this point here as the base point.
And now look at this.
Now the line is rotating with respect to that selected base point and you only need to specify the angle
now.
So I'll type 30 as the angle and press enter and there we have it.
So the line is now rotated to an angle of 30 degrees.
In this case you do need to add angle sine or any other thing.
Simply type the value of angle and presenter and you'll get the line inclined to an angle of 30 degrees.
So this angle measurement will always happen from the original line.
So in my case the line was originally at zero degrees angle or it was perfectly horizontal.
And that's why the rotation started from that zero degree or horizontal line.
Now let's talk about this situation here.
We have a perfectly horizontal line and another one which is inclined to any random angle which we don't
know about.
So in this case let's first check the angle between these two.
So I'm going to use one of the options here.
Dimension but you can't ignore this part safely because I have explained everything about dimensions
later on in this course.
For now I'll simply add these two.
And here we have the angle.
And now we know that the angle is 16 degrees.
So I'm going to just erase it and now I'll once again go to rotate.
Now select this line and enter specify base point.
All right.
And once again I'll type 30 30 and enter.
So now simply with visual comparison you can clearly see that this angle and this angle is not same.
They are different.
Well in this case I specified an angle of 30 degrees but the measurement will start from the original
line.
So the final angle should be 30 degrees plus 16 degrees.
So I'm going to check the angle again.
So dimensions this line this line and that's 46.
So in this case the measurements started from the original line.
So that's the whole thing about rotate command rotate command will always rotate your drawing.
With respect to its original position in this case this was at 16.
So it made a final angle of 30 degrees with respect to this line.
So if you measure it with respect to this then you'll get that degrees.
So I'm going to do that next.
I like to rotate again.
Now once again select this line and enter and this time I'll select base point and click on this option
copy.
Now this will allow you to keep one of the copies here and now you have the rotated line.
I'm going to type 30 and enter.
So now we have this line rotated here.
Let's check the angle between these two.
So this should be 30.
So I'm going to go to dimension.
I'll click here and here and look at this.
It's 30.
So always AutoCAD we'll start measurement from your original configuration.
Now there is a problem again how can we rotate lines like these to any known angle.
For example what if we want to make this line perfectly vertical with respect to this horizontal line.
So in that case you can use a reference option again.
So I'm gonna go to rotate and select this line and enter as the base point.
And now we have an option here called reference so I'll select reference angle and you already know
that this angle is 16 degrees so type 16 for reference and enter and now AutoCAD will move 16 degrees
back and if it moves 16 degrees back it will end up with this horizontal line.
So that means the measurement will now start from this horizontal line because we have added 16 degrees
as a reference angle.
So now if you type 90 you'll end up with a perfectly weighted goal line because we have already added
of a reference value which was 16.
So AutoCAD will just take that line 16 degrees back and then it will start measurement.
So I'm going to show it again using another example.
In this case the angle was 16 degrees.
It was not an angle but what if you don't even know the angle of this line.
In that case you can use two points on this line as a reference.
So here it is.
I'll go to rotate and select the line I'll press Enter I'll click on base point and now I'll select
reference and in this case I'll select this point and this point.
And now the reference angle is already selected.
All you need to do is simply add the final value.
In this case 90 enter and once again it's political.
So if you know the reference angle you can type that value after reference option.
If you don't even know the value that's also fine you can select any two points on the line to specify
the reference angle and when you specify reference angle AutoCAD will start measuring everything from
that reference angle.