Mathematics for IGCSE & O level - Geometrical Constructions (Section 3 - No. 18)
Which of the following is a key element when constructing a triangle given three sides using a compass?
Using a ruler for all lines.
Ensuring the angles are less than 90 degrees.
Using a pencil that creates a very thick line.
Using only a protractor.
Explicação
A ruler should be used for drawing straight lines to ensure accuracy.