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DIHEDRAL SYSTEM

moises79

Created on November 14, 2016

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Transcript

UNIT 2: DIHEDRAL SYSTEM

ONLINE LESSONS

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SCALES

When we draw an object on paper, we must to decide if the size matches its real size or we make it bigger or smaller. That is the reason why we need scales in technical drawing.

ACTIVITY 1: Open the book and look for the following definitions: - Scale. - Scale down. - Scale up. - Full scale. Write them down in a Google Drive text document and share it with your teacher (practicasmoises@gmail.com):

ACTIVITY 2: Search in internet for the distance (in kilometres) between Madrid and Barcelona. Apply it a 1:50000 reduction scale and calculate the new distance, in centimeters, that separate both citys in a map using that scale. Write the result in the same text document you created in activity 1.

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DIHEDRAL SYSTEM

Dihedral is the most common system for representing objects and figures in 2 dimensions.

In the European system, the views are drawn like this:

Take a look howhidden lines are drawn

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MONGGE

Mongge is a technical drawing software. It is easy to use, but it would be advisable to read some instructions before start using.Download the instructions sheet by clicking here:

Do all the activities proposed in the sheet and show / send them to your teacher.

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