A regular polygon having an interior angle measure of 168o has 30 sides and is called a triacontagon.
The measure of each interior angle of a fifteen sided regular polygon, a pendedecagon, is 156o.
The interior angle of an octdecagon, an 18 sided regular polygon, is 160o.
If the measure of an interior angle of a regular polygon is 140o, the polygon is a nonagon (sometimes called an ennagon) having 9 sides.
Each interior angle will measure 162 degrees
A regular polygon with each interior angle measuring 120 degrees is a hexagon.
A regular polygon with 4 sides is a square. The measure of any interior angle of a square is 90 degrees.
Providing that it is a regular polygon then each interior angle will measure 160 degrees
If the polygon is regular, the measure of one interior angle of a 24 side polygon is 165 degrees.
A regular hexagon.
A pentagon (five sided regular polygon) has interior angles of 108°.
Tha will depend on how many sides the regular polygon has.