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.
It sounds like something in your ear canal is rubbing against your ear drum. When my patients have this symptom it is usually caused by a hair. Hair normally grows in the ear canal. If one gets a little long and points inward it is easy for an earbud to push it so it touches the ear drum. This touch will sound like loud scratching.