Proofs concerning equilateral triangles About Transcript Sal proves that the angles of an equilateral triangle are all congruent (and therefore they all measure 60Â°), and conversely, that triangles with all congruent angles are equilateral.
Lung disorders or diseases in which a hyperresonant sound is heard upon percussion. small pneumothorax, lung hyperinflation due to emphysema or acute asthma attack.
Tidal Percussion Percuss down the back until the normal hyperresonance of the lungs becomes dull over the diaphragm. Then simply have the patient breath in and out deeply while continuing to percuss. The sound should wax and wane.