Engineering Drawing Form 4 Ellipes and Parabolas

GEOMETRICAL DRAWING

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CHAPTER 1 : GEOMETRY – ELLIPSES AND PARABOLAS 1.

Construc Cons tructt an ellips ellipse e when when given given majo majorr axis AC and mino minorr axis axis BD.

D

A

C






Construc Cons tructt an ellips ellipse, e, major major axis axis BD BD and mino minorr axis axis AC are are given. given.

D

A

C






Construct a parabola inside the given given rectangle. rectangle. PQ is a symmetry axis of of the parabola. parabola. P is vertex of parabola.. parabola 4

4 3

3 2

2 1

1

P 1

2

3

4






Construct a parabola inside the given given rectangle. rectangle. AB is a symmetry axis of the parabola. parabola. A is vertex vertex of parabola.. parabola 4 3 2 1

4 3 2 1

A 1

B






Figure Figu re 1 shows shows a templat template. e. Draw Draw the temp template late in full full scale. scale.

Half ellipse Major axis 90 mm Minor axis 60 mm

C

A

A 1 2

Half Parabola

3

C








Figure Figu re 2 sho shows ws a temp template late.. Draw Draw the the templa template te in full sca scale le..

3

2

1

C

D

3

Engineering Drawing Form 4 Ellipes and Parabolas

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