Engineering Drawing

How to draw a line tangency to two circle.

- Draw line between two center.
- Draw arc through these center.
- Draw circle with R59-R39 to intersect
the arc at D.
- Draw line AD and project until E.
- Draw parallel line AE and BF.
- EF is line of tangency between two
circle.

How to draw a line tangency to a circle

- Draw a line from point P to the

centre of the circle, R.

- Draw an arc through point P and R.

- N is the point of tangency.

- Draw line PN.