It has 12 sides
An angle that measures 210 degrees is a reflex angle.
The third angle measures 18 degrees.
A right angle measures 90 degrees
if an angle measures 30 then it is acute
the measures of each angle in a dodecogon is 360
An angle that measures 180 degrees is a straight angle, or straight line.Line.
An angle that measures 180 degrees would be in a straight line. Therefore, this angle is known as a straight angle.
An angle that measures to precisely 90o is called a right angle.
right triangle
It is a right angle triangle and the 3rd angle will measure 30 degrees
If it measures 90 degrees, then it is called a right angle.