A decagon has 10 sides. It also have 10 angles.
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10
It has 10 interior angles that add up to 1440 degrees
Not normally but if it was an irregular decagon then it's quite possible.
A decagon has 10 angles (and sides)
It depends on whether or not the decagon is a perfect decagon or a complex decagon. However, a perfect decagon has no acute angles.
A decagon has ten vertices.
There (not their) are 10 angles.
A decagon has 10 sides, and 10 angles. The sum of the interior angles of a decagon is (10-2)×180° = 1440° In a regular decagon all the angles are congruent at 1440° ÷ 10 = 144°
A decagon has 10 sides. It also have 10 angles.
A decagon will always have its interior angles measure 1480
A decagon can have acute angles.
None.
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The sum of the interior angles of a dodecagon (not duo-decagon) is (12 - 2)*180 = 1800 degrees.