Chapter 3: Working with Sketches
l (^) Tangent to Two Entities. Start the circle with the cursor near one line in the sketch.
A Tangent symbol appears by the cursor with a yellow background. Click and drag
the diameter to the second tangent entity, where a similar cursor symbol should
appear. Release the mouse button and right-click the green check mark icon. This
process is shown in Figure 3.6.
l Tangent to Three Entities. Use the same process for Tangent to two entities, but
omit the right-click of the green check mark icon. After dropping on the second tan-
gent, drag again to the third tangent entity.
FIGURE 3.6
Creating a perimeter creation circle
Centerpoint Arc creates an arc by clicking the center, dragging the radius, and then clicking and
dragging the included angle of the arc. The first two steps are exactly like the Center-Radius circle.
Tangent Arc creates an arc tangent to an existing sketch entity. Depending on how you move the
cursor away from the end of the existing sketch entity, the arc can be tangent, reverse tangent, or
perpendicular, as shown in Figure 3.7.
Another way to create a tangent arc (called autotransitioning) is to start drawing a line from the
end of another sketch entity, and while holding the left mouse button, press the A key; or return
the cursor to the starting point and drag it out again. This second method can be difficult to mas-
ter, but it saves time compared to any of the techniques for switching sketch tools.