Answer:
Obtuse angle.
Step-by-step explanation:
To find out what kind of angle it is, just follow this rule of thumb:
Acute Angles: Acute angles will always measure from 89° or less.
Right Angles: Right angles will always be 90°.
Obtuse Angles: Obtuse angles will always measure from 91° or greater.
In this case, the given angle has a measurement of 165°. Because 165 is greater than 90, it is a obtuse angle.
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