WEBVTT

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>> Before we start the
drawing we have to make sure

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that both the grid is on as well
as the snap because we're going

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to rely on grid and snap
to create our drawings.

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Starting with the
rectangle command.

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The rectangle command.

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And relying on the coordinates.

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And watching the
coordinates here.

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Starting from zero, zero.

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And take now that it just jumps
from one grid length to another.

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So I can easily go to 5.

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Five along x and 5 along y to
give me the first rectangle.

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OK? The second rectangle
says it should be 1.5

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to the right of the left one.

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So I'm going to create
another rectangle.

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Each one of these is .5.

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So this one is 1.5 to the right.

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And then I'm going to go 5 --
so 1.5 plus 5 is 6.5 plus --

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anyway I need to go to 11.5.

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And OK, that will be two
rectangles that are 5 by 5.

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Then, I want to make sure
that my osnap's on, right?

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The object snap.

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And you will right mouse click
on it and select settings.

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I want to make sure
that the object snap

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and object tracking are on and
that endpoint, midpoint, center,

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and intersection, and, perhaps,
perpendicular, are all on.

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OK? Because I'm going
to rely on those

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to create the drawing
on the left side.

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OK? So I'm going to go line.

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OK? Over here.

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I go to the midpoint of
that point, to the midpoint

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of that point, to the
midpoint of that line,

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to the midpoint,
to the midpoint.

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OK? Next I'm going
to put another series

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of lines going to the midpoint.

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I have a hard time
going to the midpoint,

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I can turn off the snap
so I don't go jumping

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from one gridline to another.

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Because the midpoint of
this is not on a gridline.

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So I go to the midpoint of this,

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to the midpoint,
to the midpoint.

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As long as I'm seeing
that green,

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it means it's going
to the midpoint.

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And then maybe to
the midpoint of this.

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OK? Next thing I'm going
to create the lines here.

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Line over here to here.

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And repeat that from
here to here.

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Repeat that from here to here.

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And repeat it again
from here to here.

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And next thing, I'm going
to create a center --

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the circle in the center.

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So to do that, instead
of doing the radius,

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I'm going to do what's
called 3-point.

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OK? I'm going to specify
three points on the circle.

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One passing through
the midpoint of this.

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One passing through
the midpoint of this.

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And the third one passing
through the midpoint --

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that completely defines
my circle.

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And then I am going to add
two linear dimensions here.

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One from the top here
to the bottom here.

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OK? Position somewhere here.

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And I'm going to scroll
up -- I'm going to pan.

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A new dimension from this corner
here to this endpoint here.

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Somewhere down.

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I'm using my right --
my scroll bar to pan it.

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Or you can use the
pan over here.

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This time circle and radius.

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So circle who centers
down here and a radius 1.

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I'm going to pick one place.

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And next thing I want to do is
draw a line from this corner

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down tangent to the circle.

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So an easy way to do that
is to, again, setting,

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I right mouse click here.

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And you want to make sure that
center of a circle is not on

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but rather tangent
to the circle.

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OK? So I'm going to make a
line from this corner here,

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which is the end of the line,

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and I want it to
be tangent here.

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Let's see if I can do that.

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Object snapping tangent.

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And then I move it until
the intersection here.

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OK? I will repeat it by creating
another circle here of radius 1.

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OK? Then I'm going
to create a line

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from this lower left
corner here.

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Again, I am going to say I
want it to be tangent here

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so I just touch the circle
to indicate without clicking

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that I want it to be tangent.

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And then I'm going to
trace the intersection

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of that tangent line.

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Pretty simple.

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There we go.

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And then we move to
the intersection here.

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If you're having problems,
just create the line tangent

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to the circle and you
can always trim it later.

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Now we need to erase these two
recycles and we are almost done.

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We just need to do another
dimension here of 5.

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And then we need to
do another dimension.

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However, under annotate,
instead of a linear dimension,

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it's what we call
an align dimension.

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Here we go.

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So align means that it's not
going to be horizontal but --

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so let's see if I can go.

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Domain from here.

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And then perpendicular.

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There're so many
different settings.

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So you change the setting so
that only perpendicular is on.

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OK. So perpendicular to this.

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There we go.

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Perfect.