-In 
, RT = 12, ST = 14, and RS = 16. Where M is the midpoint of 
and N is the midpoint of 
, find the perimeter of 
.
Definitions:
Minnesota Multiphasic Personality Inventory
A standardized psychometric test used to assess and diagnose mental disorders and personality structure.
Empirically Keyed
A method of developing psychological tests that involves analyzing how distinct groups respond differently to items, leading to scales that are empirically linked to particular traits or behaviors.
Personality Test
A psychological instrument or questionnaire designed to reveal aspects of an individual's character or psychological makeup.
Thematic Apperception Test
A projective psychological test where individuals express their thoughts and feelings through the stories they create about ambiguous pictures.
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