engineering drawing form 4(Tangents)

GEOMETRICAL DRAWING

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CHAPTER 1 : GEOMETRY – TANGENTS 1.

Construc Cons tructt a line tang tangent ent to given given circ circle le at at point point P.

P










Construc Cons tructt a line line from poin pointt Q and and tange tangent nt to give given n circle circle..










Construc Cons tructt a line line tangen tangentt to two two circles circles touc touching hing exte external rnally. ly.

P Q

4 R 2

A

RB - RA

x

3 6 R










Construc Cons tructt a line line tangen tangentt to two two circles circles touc touching hing inter internall nally. y.

x

RA + RB

P

4 R 2

A B










Construc Cons tructt a circle circle with the radius radius 45 45 mm and and tangen tangentt to line at point point P.

O












Construc Cons tructt a circle circle with the radius radius 25 25 mm and and tangen tangentt to line AB and BC.










Construc Cons tructt a circle circle with with the the radius radius 27 27 mm tang tangent ent at at point point R and and touchin touching g externa externally. lly.










Construc Cons tructt a circle circle with with the the radius radius 25 25 mm tang tangent ent at at point point S and and touchi touching ng interna internally. lly.










Construc Cons tructt a circle circle with with the the radius radius 27 27 mm touc touching hing exte externall rnally y circle circle A and circle circle B.









CHAPTER 1 : GEOMETRY – TANGENTS 10. Construct a circle with the radius 70 mm touching internally circle A and and circle B.

P

A

































































engineering drawing form 4(Tangents)

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