No:
The sum of the exterior angles of a polygon is 360o. For a dodecagon (12 sides) the exterior angle is 360o / 12 = 30o.
The interior and exterior angles are supplementary and so they sum to 180o; thus the interior angle of a dodecagon is 180o - 30o = 150o.
For an interior angle of 144o, the exterior angle is 180o - 144o = 36o, so there are 360o / 36o = 10 sides (a decagon).
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If your "53" is in degrees, then the vertex angle is 74 degrees.
80 degrees.
If each angle measures 90 degrees the polygon is a square and so its angles sum to 360 degrees.
Providing that it is a regular nonagon then each exterior angle measures 40 degrees and each interior angle measures 140 degrees
It is: 180-72 = 108 degrees and it is a regular 5 sided pentagon