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If it measures 90 degrees, then it is called a right angle.
It is an obtuse angle
Measures of the center.
a ray
The gun that measures angles are called "clinometers". We used them in Geography and maths as well! :)
Otologist. Normally they are specialized in the ear, nose and throat (ENT), thus called an Otorhinolaryngologist. Audiologist specialize exclusively in hearing problems - they examine, screen, diagnose, treat, and provide hearing aids or cochlear implants.
The doctor is an "ENT" (ear, nose, and throat doc) or an "Otolaryngologist". His technician/grunt/slave who runs the hearing test is an Audiologist.
Someone who isn't deaf is typically referred to as hearing, or as having normal hearing.
Until a professional improves this answer, here is a layman's understanding. Radiation can be measured with a Geiger Counter, or a film badge device I think is called a Dosimeter.
An audiogram is a record of hearing. It is what laypeople call a hearing test.
a persons shoe sise is....
Professional negligence called MALPRACTICES.
Meter organizes stressed and unstressed sounds into measures.
a professional dancer.
The answer to country persons (us) is hayseeds
A hygrometer measures humidity. Don't confuse it with a hydrometer which measures density.
The preliminary hearing