Engineering Drawing Form 4 Circles

GEOMETRICAL DRAWING

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CHAPTER 1 : GEOMETRY – CIRCLES 1.

Figure Figu re 1 sho shows ws a circ circle. le. Deter Determine mine the cent center er of of the circl circle e

A

B

O

C








Figure Figu re 2 sho shows ws an an arc. arc. Determ Determine ine the the cente centerr of the the arc arc .

C B

A

D








Construc Cons tructt a circle circle throu through gh the the given given poin pointt A, B and C.

C

A

O








Figure Figu re 3 shows shows a triangle triangle ABC. ABC. Construc Constructt a circumscr circumscribed ibed circle circle of of triangle triangle ABC.

C

A

O








Figure Figu re 4 shows shows a trian triangle gle ABC. ABC. Construc Constructt an externa externall circle circle of the the triangle triangle .

C

O










Figure Figu re 5 shows shows a trian triangle gle ABC. ABC. Construc Constructt an inscrib inscribed ed circle circle of of the triangl triangle e.

C








Draw a semi circ circle le throug through h the poin pointt A, B and and C. Angle of ABC = 90o.

C








Redraw the the template template shown shown in Figure 7, 7, using geometrica geometricall techniques. techniques. The The new position of points B and C is as shown.








Figure 7 shows a template template ABCDE. Redraw Redraw the template by using using the the geometrical geometrical methods. The new position position of point B and point C are as shown.

B B







CHAPTER 1 : GEOMETRY – CIRCLES 10. Redraw the template template shown in Figure Figure 8, using geometrical geometrical techniques. techniques. The new line of BC is as shown. shown.

E









Engineering Drawing Form 4 Circles

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