Re: [Dr. Geo] Dr-geo Digest, Vol 41, Issue 3

[Hilaire Fernandes]

Hi Nitsh,

I am glad you have some use of this documentation. I wrote it for my 
young students, but it was too demanding for them.

Regarding your questions:

1. you will use tow circle of same radius.

2.

a. On approach is to define the point position within a block:

     sketch point: [0@0]

b. Another approach is to lock it:

| sketch p₁ |,sketch := DrGeoSketch new.,p₁ := sketch point: 0@0.,p₁ lock


3. I am not sure to understand but I will use a circle of center H and 
of given radius, then set point N on the circle. For a given angle, you 
miss an angle side, but I will use a rotation to get this effect. I 
widely used, such code could be factored by adding it as an extension to 
the DrGeoSketch class.

Hilaire

Le 07/12/2023 à 18:03, Nitish Kumar a écrit :
> Hi Hilare,
>
> Thank you very much for that and sorry for the delay in responding. :)
>
> The French documentation had instructions for creating a parallelogram 
> using two different techniques. I adapted the technique that uses 
> circular constraints to create an equilateral triangle:
>
> Here is the code I wrote:
>
> | figure o m n p mn pm circle_a circle_b |
> figure := DrGeoFigure new axesOn gridOn scale: 50.
> m := (figure point: 2 @ 0) name: 'M'.
> n := (figure point: -2 @ 0) name: 'N'.
> mn := figure segment: m to: n.
> circle_a := figure circleCenter: m segment: mn.
> circle_a dashed.
> circle_b := figure circleCenter: n segment: mn.
> circle_b dashed.
> o := figure intersectionOf:  circle_a and: circle_b.
> o name: 'O'.
> figure segment: o to: m.
> figure segment: o to: n
>
> This code creates an equilateral triangle for me.
>
> I have three questions that will also help me in creating future 
> sketches. :)
>
> 1. How should I modify the code above to create isosceles triangles?
> 2. Is it possible to make a point have a fixed position? For example, 
> point M. I only want point N to be movable.
> 3. Is it possible to draw a segment such as HN from the point N that 
> is at a certain angle and of certain length?
>
> Thanks.
>
> On Mon, Dec 4, 2023 at 4:38 PM Hilaire Fernandes <hfern@free.fr> wrote:
>
>     Hi Nitsh,
>
>     You are welcome to ask additional questions.
>
>     Hilaire
>
>     Le 23/10/2023 à 16:37, Nitish Kumar a écrit :
> >     Hi Hilarie,
> >
> >     I plan on using Dr. Geo to create interactive illustrations for
> >     my educational YouTube videos.
> >
> >     The first one will probably be about triangles, their properties,
> >     and types. :)
> >
> >     Is it alright if I ask further questions when I face any issues?
> >
> >     I am reading the French documentation with help of Google
> >     translate but some things get mistranslated creating confusion.
> >
> >     Thanks,
> >     Nitish.
>
>     -- 
>     GNU Dr. Geo
>     http://gnu.org/s/dr-geo/
>     http://gnu-drgeo.blogspot.com/
--
GNU Dr. Geo
http://gnu.org/s/dr-geo/
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