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.
Abnormal Breath Sounds. There are several abnormal sounds that can be heard over the lung fields. Click on the stethoscope to hear the abnormal lung sound. Click on the name of the abnormal lung sound to learn more about the sound. Wheezes (Sibilant)-a high-pitched, musical sound similar to a squeak. It is heard most commonly during expiration, but also can be heard during inspiration. It is heard in narrowed airway diseases such as asthma and chronic emphysema.