Obtuse angles are between 90° and 180 ... 360° \(-\) 28° = 332°. Draw the line QR. Place the cross on the protractor on the point Q, and the bottom line over the line QR.

@fabiosa_tips_tricks on Instagram showcases an elegant yet effective hack for measuring floorboards to fit places where the room shifts at an obtuse ... angle of the wall is too difficult to draw ...