A circle in perspective

What is the difference between a circle in perspective and an ellipse and how to draw them.

A circle in perspective is not the same as an ellipse.

An ellipse is a circle viewed from a simple angle – say 45 degrees.

A circle, drawn in a square, of the same diameter as the length of edges of the square makes a tangential intersection with the edges of the square in the middle of each of the walls of the square. Ekk!

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An ellipse is what you see if you look at a circle on at a angle. A circle in perspective is a circle viewed using one or two point perspective. One half of an ellipse is the symmetrical with the other half. There are no lines of symmetry in a circle in perspective. One half is smaller and a different shape from the other half.

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To draw a circle in perspective. First draw a square in perspective, then cross the square, and find the centre. Mark the tangential intersection points and mark in guess guides for the ellipse. Then squint your eyes, look, judge it and draw.

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