About 65,600 results
Open links in new tab
  1. Properties of Equilateral Triangles in Circles

    Mar 11, 2016 · If there is an equilateral triangle in a circle, would the midpoint of any of the 3 sides be half the radius? e.g if the radius was 6 and at the midpoint of the triangle (call it B) would center ...

  2. What is the equation of a general circle in 3-D space?

    May 20, 2020 · Intuitively, "an equation" cuts down the dimension by one, but to get a circle in space you have to lower the dimension by two. (A small piece of a circle looks like a line, so a circle is "one …

  3. geometry - How to calculate the radius of a circle inscribed in a ...

    May 1, 2016 · If I know how long one side of a regular hexagon is, what's the formula to calculate the radius of a circle inscribed inside it? Illustration:

  4. What is the area of a regular polygon inscribed in a circle?

    Aug 26, 2020 · This is the formula expressed with the radius, but it's pretty long. You can use the fact that the height of each triangle is the radius of the circle inscribed into the regular polygon, so the …

  5. Polar equation of a circle - Mathematics Stack Exchange

    It should be noted that this equation of the circle is simply the Law of Cosines with appropriate variables.

  6. Calculating the arc length of a circle segment

    Jun 11, 2014 · 5 I would like to calculate the arc length of a circle segment, i.e. I know the start coordinates (x/y) of the circle segment, the end coordinates (x/y) and the x and y distances from the …

  7. geometry - How is this circle inversion formula calculated ...

    Aug 20, 2015 · @AndrewD.Hwang I have ran across the exact same problem but in inversion under a sphere, instead of a circle. I've applied this formula for the radius to my program, in my case for the …

  8. geometry - Circle revolutions rolling around another circle ...

    Jul 6, 2015 · I just watched this video, and I'm a bit perplexed. Problem: The radius of Circle A is 1/3 the radius of Circle B. Circle A rolls around Circle B one trip back to its starting point. How many t...

  9. Get radius of circle given arc length and chord length

    Sep 3, 2021 · I have to program a software to get radius of a circle with arc and chord Let's say arc = $9.27$ and chord = $8$, here is what I tried so far: from the arc formula, I know that: $$\pi r * \frac {\th...

  10. Arc length and area of sector - Mathematics Stack Exchange

    This lead to Archimedes' Method of Exhaustion to prove the formula for a circle, or more explicitly, the area of a circle is equal to the area of a triangle having a height equal to the radius of the circle and …