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A convex planar polygon (shapes with no corners poking inward, only outward, that can be drawn on the flat, 2 dimensional plane) can only have 4 right angles.

Polygons can also be drawn on non-planar surfaces, such as on a sphere. In the case of a sphere, it only takes 3 right angles to create a closed polygon. Picture the shape on the globe created by following the equator from Mexico to the prime meridian, then up to the north pole, then back down along the 90 degree West line of longitude. This is a three sided polygon with three right angles.

If drawing on a surface with positive curvature made a right angled polygon with fewer sides, then a negative curvature surface should allow for a right angled polygon with more than 4 sides. Below is an image of just that, taken from a YouTube video on the subject, "5-Sided Square - Numberphile" This is a 5 sided right angled polygon drawn onto a psuedo-sphere. This shape has constant negative curvature.

This was accomplished by allowing our plane to curve into 3 dimensions. It is plausible that a surface curving into a 4th or higher dimension, with negative curvature, may produce a 6 sided polygon with all right angles, but you could not draw it in our 3 dimensional universe. Someone smarter than I would have to see if it could be described mathematically in that higher dimension.

tl;dr : No, not in our 3 dimensional universe. Maybe in a higher dimension. You can create 3, 4, and 5 sided convex polygons with right angles here in our universe.

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Shanna Mae

Lvl 2
4y ago
pattern, design
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Wiki User

14y ago

Yes I've drawn one myself.

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Q: Can a polygon have six right angles?
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