In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: Compass-and-straightedge or ruler-and-compass construction is drawing of lengths , angles or shapes using only a ruler and compass .
A: 
Straightedge and compass construction , also known as ruler-and-compass construction or classical construction , is the construction of lengths , angles , and other geometric figures using only an idealized ruler and compass .