Mathematics for IGCSE & O level - Geometrical Constructions (Section 1 - No. 33)
Which of the following is a key point when constructing a triangle?
Always use a set square.
Angles between lines should be drawn and measured to an accuracy of 1°
The third side should always be measured first.
A compass is not needed.
Giải thích
Angles between lines should be drawn and measured accurately.