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A circle is NOT made up of straight lines.

As the number of sides of an n-gon are increased and the length of each side is reduced, the distance between the n-gon and the circle can be made smaller than an arbitrarily small number. The n-gon TENDS to the circle as the length of the largest straight line segment tends to zero but that does not mean the two are ever the same.

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Q: How do you prove that a circle is made up of straight lines?
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Can a circle be made of straight lines?

No. A circle has no straight lines. You can approximate circles with very small straight lines (that's how a computer draws circles) but mathematically, no.


How many line segments does a circle have?

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What is a shape made up of line segments?

A shape made up of line segments is a shape with straight lines, or a polygon. for example, a square has straight lines, or is made up of line segments. A circle is not in that category because it has no straight lines, they are curved.


How many perpendicular lines does a circle have?

A circles has no perpendicular lines. Perpendicular lines are two straight lines that join forming 90 degree angles. They are found in squares, rectangles, and right-angled triangles. A circle is made by one line that is not straight but is curved. If you drew a circle, rectangle, right-angled triangle, or cross in the circle, then the circle would contain perpendicular lines. But the circle itself would have no perpendicular lines.


Can a curved surface have any straight lines like a semicircle for example?

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