types of lines and orthographic drawing

Construction lines are...

• used when planning out the drawing.

• they are the lines that are used to show visible edges.

• used to show the centre lines of a symmetrical object.

Visible line (Outlines) are..

• used when planning out the drawing.

• the lines are used to show something that is hidden for example like a hole or an edge- shows hidden detail.

• they are the lines that are used to show visible edges.

Hidden lines are used to

(a)  

Dimension lines show..

(a)  

Centre line / Chain line is used for...

• The lines are used to show something that is hidden for example like a hole or an edge- shows hidden detail.

• Consists of a long line and a dash repeated; used to show the centre lines of a symmetrical object.

• Lines are feint lines that are used when planning out the drawing.

The word orthographic comes from two words. "Ortho" means looking

____________. "Graphic" means a ____________.

(a)  

this image is drawn as an orthographic image

• true

• false