You may be required to construct a triangle given \({3}\) sides (SSS). To do this you will need a ruler and a compass, but not a protractor as you do not have any information about the angles.

Your location will be somewhere in that triangle. This isn’t perfect, but you’ll have a fairly good idea of where you are.

You can split a rectangle into 2 right-angled triangles. Image caption, STEP 2: Use the compass to draw a circle. Put a dot where the compass rested and use the ruler to draw a horizontal line ...