Charles Link's latest activity
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Charles Link replied to the thread I Geometry problem of interest with a 3-4-5 triangle.@bob012345 ok, but try making the ratio of horizontal and vertical lines with spacing 1,root 2,1 and connecting the points on the sides... -
Charles Link reacted to bob012345's post in the thread I Geometry problem of interest with a 3-4-5 triangle with
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Here is a simple drawing of the regular octagon within the square. If the square has corners at (±1,±1), the outside points are root(2)... -
Charles Link reacted to TensorCalculus's post in the thread B Venus and Jupiter Conjunction with Like.
Oh, thanks! That's really helpful!
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Charles Link replied to the thread I Geometry problem of interest with a 3-4-5 triangle.@Gavran It helps to go back to the diagrams of post 23 to see this, (for the 3-4-5 case), because the results are not displayed nearly...
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Charles Link reacted to Gavran's post in the thread I Geometry problem of interest with a 3-4-5 triangle with Like.
Both octagrams in the post #28 are irregular octagrams and the first one has an irregular octagon in the centre while the second one has...
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Charles Link replied to the thread I Geometry problem of interest with a 3-4-5 triangle.Unless someone can come up with a better procedure, I think it is ok to measure the spacing of 1,root 2, and 1 to generate the regular...
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Charles Link reacted to bob012345's post in the thread I Geometry problem of interest with a 3-4-5 triangle with Like.
I was looking at how to make a regular octagon in the spirit of the OP but it’s difficult to construct the ratio you mentioned without...
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Charles Link replied to the thread I Geometry problem of interest with a 3-4-5 triangle.@Gavran On the video of post 28, they missed the boat I think when they tried to do the regular octagon. I sketched it myself at...
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Charles Link replied to the thread I Geometry problem of interest with a 3-4-5 triangle.as mentioned in the OP, ## \tan(\theta-\phi)=\frac{\tan(\theta)-\tan(\phi)}{1+\tan(\theta) \tan(\phi)} ## makes it very easy to compute...
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Charles Link reacted to Gavran's post in the thread I Geometry problem of interest with a 3-4-5 triangle with Like.
The polygon is an isotoxal octagram. The source: https://en.wikipedia.org/wiki/Octagram. There is an interesting video which shows a...
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Charles Link replied to the thread B Venus and Jupiter Conjunction.I saw the two "stars" out my window in the morning about two weeks ago when they were somewhat further apart. I guessed it might be...
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Today at about 4:30 am I saw the conjunction of Venus and Jupiter, where they were about the width of the full moon, or one half degree...
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Charles Link replied to the thread I Geometry problem of interest with a 3-4-5 triangle.From symmetry, it is readily seen that the sides come in 4 identical pairs. The angle between the two sides in each pair is not 135...
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Charles Link reacted to bob012345's post in the thread I Geometry problem of interest with a 3-4-5 triangle with Like.
The edges are the same lengths but parallel edges are skewed wrt each other, they are parallelograms not rectangles.
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Charles Link reacted to SammyS's post in the thread I Geometry problem of interest with a 3-4-5 triangle with Like.
Of course, those angles are in degrees and are rounded to the nearest degree.