Right angle not polygon. (i'm not mad).
square
right angle triangle
a rectangle
There is a formula which can help.The sum of the interior angles of a polygon is 2n - 4 right angles.When n = 12 then the interior angles total (2 x 12) - 4 = 24 - 4 = 20 right angles.Then for a regular polygon, each angle measures (20 x 90) / 12 = 150°.When the polygon is a regular polygon then it is perhaps quicker to calculate the external angle from which the interior angle can then be determined.Exterior angle = 360 /12 = 30°Interior angle = 180 - 30 = 150°
Any polygon with 4 or more sides can always have a right angle.
a quadrilateral
The name of the angle which has three sided polygon called Triangle.
Right angle not polygon. (i'm not mad).
a polygon and maybe a trapiziod
A regular hexagon.
hexagon
square
A regular polygon with 4 sides is a square. The measure of any interior angle of a square is 90 degrees.
right angle triangle
polygon
a rectangle