Oh, dude, a decagon has 10 sides, right? So, each angle in a regular decagon measures 144 degrees. Now, a right angle is 90 degrees, so technically, there are zero right angles in a decagon. But hey, who's counting, right?
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There are no right angles in a regular decagon. On a regular decagon, the angles are 144 degrees, where as right angles are ninty.
a decagon
a decagon
There can be 10 obtuse angles. If there are no reflex angles there can by up to three acute angles (I think).
Oh, dude, a decagon has like 10 angles. Yeah, it's called a "deca"gon for a reason, you know, like decimal, decade, decathlon. It's like a polygon with 10 sides, so it's got 10 angles. Math can be chill sometimes, right?
''Decagon'' is any polygon with ten sides and ten angles ''Regular decagon'' is a polygon with ten sides of equal length and all angles equal to 144°