Question

Which line type is thick and black ?
(1) Visible lines
(2) Center lines
(3) Construction lines
(4) All of the above​

Answer 1

Answer:

I think the answer is center line

ok

Answer 2

Visible lines are thick and black. (Option 1)

• Technical drawing uses different types of lines to properly explain the design.
• The line types used are universal.
• The lines used in these drawings are known as the alphabet of lines and they can be understood by anyone irrespective of their language.
• Each line is unique and the difference is visible through their difference in weight and thickness.
• Visible lines are thick and dark lines.
• Center lines are thin, dark, short dash lines.
• Construction lines are thin and light lines.