engineering drawing form 4 ellipes and parabolas

GEOMETRICAL DRAWING

LOCAL PUBLICATIONS (001427383-A)

A

B

C

D

CHAPTER 1 : GEOMETRY – ELLIPSES AND PARABOLAS1. Construct an ellipse when given major axis AC and minor axis BD.

LOCAL PUBLICATIONS (001427383-A)

A

B

C

D

CHAPTER 1 : GEOMETRY – ELLIPSES AND PARABOLAS2. Construct an ellipse, major axis BD and minor axis AC are given.

LOCAL PUBLICATIONS (001427383-A)

P

Q

1

2

34

1

23

4

1

2

3

4

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

CHAPTER 1 : GEOMETRY – ELLIPSES AND PARABOLAS

CHAPTER 1 : GEOMETRY – ELLIPSES AND PARABOLAS

LOCAL PUBLICATIONS (001427383-A)

A B1

2

3

4

1

2

3

4

1

2

3

4

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

CHAPTER 1 : GEOMETRY – ELLIPSES AND PARABOLAS

LOCAL PUBLICATIONS (001427383-A)

5. Figure 1 shows a template. Draw the template in full scale.

FIGURE 1

Half ellipseMajor axis 90 mmMinor axis 60 mm

Half Parabola

90

A C

B

A C

B

1

2

3

4

12

34

CHAPTER 1 : GEOMETRY – ELLIPSES AND PARABOLAS

LOCAL PUBLICATIONS (001427383-A)

6. Figure 2 shows a template. Draw the template in full scale.

FIGURE 1

Half ellipseMajor axis 80 mmMinor axis 60 mm

Parabola

110

100

Symmetry axis

C

D

O

E

A

B

4

3

2

1

3

4

2

1

1

2

3

C

D

O

E

A

B

3 2 1