Key learning points

1. The first side can be drawn accurately with a ruler
2. The compass should be used to indicate potential positions for the remaining side
3. A protractor should be used to accurately measure the desired angle
4. The line to mark the required angle should be drawn to meet one of the potential positions for the remaining side
5. All triangles with the same measurements are congruent

Keywords

• Pair of compasses - A pair of compasses is a tool which can be used to draw circles and arcs. A pair of compasses is sometimes referred to just as a compass.

• Congruent - If one shape can fit exactly on top of another using rotation, reflection or translation, then the shapes are congruent.

Common misconception