To draw tangents to two circles
Home
Download PDF
Order CD-ROM
Order in Print
To draw a line tangent to a circle through a point
Drawing an arc tangent to a right angle
Illustrator Draftsman 3 & 2 - Volume 2 Standard Practices and Theory
Page Navigation
80
81
82
83
84
85
86
87
88
89
90
Tangency,
Continued
To draw
tangents to two
circles
To draw tangents to two circles, follow this table:
Step
Action
1
Given two circles with centers marked C1 and C2, move a triangle
or straightedge to connect the centerlines.
2
Place a triangle at the upper arcs of the circles until one side of the
triangle touches both circles C1 and C2.
Draw a line tangent to the
circles.
3
Draw a perpendicular line from the points of tangency to the
centerlines of the circles.
4
Repeat this procedure for the bottom arcs of the two circles.
Figure 2-28 shows how to draw tangents to two circles.
Figure 2-28.
—Drawing tangents to two circles.
Continued on next page
2-29
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business