These lines allow complex shapes to be drawn simply in 2D. In third angle, what you see from the ... that would usually be hidden in a solid drawing. Exploded diagrams can take the place of ...

Draw a 2D shape that has 4 equal sides that are each 3 cm long and has 4 right angles. What is this shape called? It is a square. Draw the 3 cm base first, then measure the right angles at each ...