>> Before we start the drawing we have to make sure
that both the grid is on as well as the snap because we're going
to rely on grid and snap to create our drawings.
Starting with the rectangle command.
The rectangle command.
And relying on the coordinates.
And watching the coordinates here.
Starting from zero, zero.
And take now that it just jumps from one grid length to another.
So I can easily go to 5.
Five along x and 5 along y to give me the first rectangle.
OK? The second rectangle says it should be 1.5
to the right of the left one.
So I'm going to create another rectangle.
Each one of these is .5.
So this one is 1.5 to the right.
And then I'm going to go 5 -- so 1.5 plus 5 is 6.5 plus --
anyway I need to go to 11.5.
And OK, that will be two rectangles that are 5 by 5.
Then, I want to make sure that my osnap's on, right?
The object snap.
And you will right mouse click on it and select settings.
I want to make sure that the object snap
and object tracking are on and that endpoint, midpoint, center,
and intersection, and, perhaps, perpendicular, are all on.
OK? Because I'm going to rely on those
to create the drawing on the left side.
OK? So I'm going to go line.
OK? Over here.
I go to the midpoint of that point, to the midpoint
of that point, to the midpoint of that line,
to the midpoint, to the midpoint.
OK? Next I'm going to put another series
of lines going to the midpoint.
I have a hard time going to the midpoint,
I can turn off the snap so I don't go jumping
from one gridline to another.
Because the midpoint of this is not on a gridline.
So I go to the midpoint of this,
to the midpoint, to the midpoint.
As long as I'm seeing that green,
it means it's going to the midpoint.
And then maybe to the midpoint of this.
OK? Next thing I'm going to create the lines here.
Line over here to here.
And repeat that from here to here.
Repeat that from here to here.
And repeat it again from here to here.
And next thing, I'm going to create a center --
the circle in the center.
So to do that, instead of doing the radius,
I'm going to do what's called 3-point.
OK? I'm going to specify three points on the circle.
One passing through the midpoint of this.
And the third one passing through the midpoint --
that completely defines my circle.
And then I am going to add two linear dimensions here.
One from the top here to the bottom here.
OK? Position somewhere here.
And I'm going to scroll up -- I'm going to pan.
A new dimension from this corner here to this endpoint here.
Somewhere down.
I'm using my right -- my scroll bar to pan it.
Or you can use the pan over here.
This time circle and radius.
So circle who centers down here and a radius 1.
I'm going to pick one place.
And next thing I want to do is draw a line from this corner
down tangent to the circle.
So an easy way to do that is to, again, setting,
I right mouse click here.
And you want to make sure that center of a circle is not on
but rather tangent to the circle.
OK? So I'm going to make a line from this corner here,
which is the end of the line,
and I want it to be tangent here.
Let's see if I can do that.
Object snapping tangent.
And then I move it until the intersection here.
OK? I will repeat it by creating another circle here of radius 1.
OK? Then I'm going to create a line
from this lower left corner here.
Again, I am going to say I want it to be tangent here
so I just touch the circle to indicate without clicking
that I want it to be tangent.
And then I'm going to trace the intersection
of that tangent line.
Pretty simple.
There we go.
And then we move to the intersection here.
If you're having problems, just create the line tangent
to the circle and you can always trim it later.
Now we need to erase these two recycles and we are almost done.
We just need to do another dimension here of 5.
And then we need to do another dimension.
However, under annotate, instead of a linear dimension,
it's what we call an align dimension.
Here we go.
So align means that it's not going to be horizontal but --
so let's see if I can go.
Domain from here.
And then perpendicular.
There're so many different settings.
So you change the setting so that only perpendicular is on.
OK. So perpendicular to this.
There we go.
Perfect.