Keep the construction lines when you draw them as they are evidence that you have constructed the triangle correctly.

What you need: ruler, protractor, pencil and paper. Use these to construct a triangle when you know the length of 1 side and the 2 angles at each end of it. In this case use the length 8 cm ...

Measured angles are displayed on a small OLED screen. To use the protractor, first the reference button must be pressed, then the device may be rotated to measure the angle. Relying on a gyroscope ...