Get Does A Pentagon Have Right Angles Pictures. Does the pentagon shape right angle. A pentagon has five sides.
geometry - Question related to regular pentagon ... from i.stack.imgur.com A pentagon has five sides. Each side is a different length. A regular pentagon has no right angles ( it has interior angles each equal to 108 degrees).
This is a companion to the dodecahedron calendar project.
In a pentagon abcde, angle aed=angle bcd=90 degrees and also bc=cd and ae=de. In a regular pentagon with sidelength 1, each diagonal has length phi. There are a lot of proofs for this and most involve angle chasing with similar isosceles triangles. Use the perimeter and apothem.
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