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.
Crackling sound while breathing that is audible to naked ears (i.e. without a stethoscope) warrants proper evaluation and treatment because of high risk of having a serious underlying disease condition. The affected person may also experience a sensation of chest rattle while exhaling.