If it measures 90 degrees, then it is called a right angle.
Measures of the center.
a ray
It is an obtuse angle
An angle that measures to precisely 90o is called a right angle.
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.
If it's someone who has full hearing they are called hearing. If they have little hearing or are lossing their hearing they are called hard of hearing.
An audiogram is a record of hearing. It is what laypeople call a hearing test.
A surveyor is a professional who measures the elevation of the Earth's surface and places plaques known as benchmarks. These benchmarks serve as reference points for future measurements and construction projects.
a persons shoe sise is....
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.
The answer to country persons (us) is hayseeds
Professional negligence called MALPRACTICES.
Changes in bone thickness are called osteoporosis, changes in vision are called presbyopia, and changes in hearing are called presbycusis.
a professional dancer.
The preliminary hearing