Cfrgtkky

I'm pretty new to Latex and i've just found out about tikZ. I'm barely able to make a triangle and angle. I just wanted to ask if you can tell me how to start with he following project:

The Preamble:

usepackage{appendixnumberbeamer}



usepackage{booktabs}

usepackage[scale=2]{ccicons}



usepackage{pgfplots}

usepgfplotslibrary{dateplot}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending,decorations.markings,intersections,angles,quotes,babe        l,lindenmayersystems,plotmarks}

pgfdeclarelindenmayersystem{A}{%

  symbol{F}{pgflsystemstep=0.6pgflsystemsteppgflsystemdrawforward}

  rule{A->F[+A][-A]}

}

tikzset{

    arc arrow/.style args={%

    to pos 1 with length 2}{

    decoration={

    markings,

     mark=at position 0 with {pgfextra{%

     pgfmathsetmacro{tmpArrowTime}{2/(pgfdecoratedpathlength)}

     xdeftmpArrowTime{tmpArrowTime}}},

    mark=at position {1-tmpArrowTime} with {coordinate(@1);},

    mark=at position {1-2*tmpArrowTime/3} with {coordinate(@2);},

    mark=at position {1-tmpArrowTime/3} with {coordinate(@3);},

    mark=at position {1} with {coordinate(@4);

    draw[-{Stealth[length=2,bend]}]       

    (@1) .. controls (@2) and (@3) .. (@4);},

    },

 postaction=decorate,

 },bent arrow/.style={arc arrow=to pos #1 with length 2mm},

 pics/strange bar/.style={code={draw[thick] (-#1,0) -- (#1,0);}}

}



usepackage{xspace}

newcommand{themename}{textbf{textsc{metropolis}}xspace}



usepackage{amsmath}

usepackage{amssymb}

usepackage[ngerman]{babel}

usepackage[utf8]{inputenc} 

usepackage[T1]{fontenc} 

usepackage{animate}

usepackage{selinput}

SelectInputMappings{adieresis={ä}, germandbls={ß}}

The Frame:

begin{frame}[fragile]

hspace{2cm}

begin{tikzpicture}[font=sffamily]

    draw[name path=A] (0,5) coordinate(TL) -- (0,0);

    draw[bent arrow/.list={0.125,0.625}] (0,0) circle[x radius=2cm,y radius=0.5cm];

    draw[fill=blue] (-2,0) circle[radius=1.5mm];

    draw[fill=yellow] (0,0) circle[radius=2mm];

    draw[name path=B] (-2,0) -- (1,5) coordinate(TR);

    draw[fill=pink,name intersections={of=A and B,by=I}] (I) circle[radius=1.5mm]node[left=3pt]{Near star};

    pic [angle radius=1cm,angle eccentricity=.5,draw,"p" alias=p] {angle = TR--I--TL};

     draw[pink,latex-,thick] (p) -- ++ (1,-1) node[right,align=left,text=black]{parallax angle\ = 1``};

    draw ([xshift=5mm]I) -- ++ (3,0) coordinate (R1) pic[rotate=45]{strange bar=0.3}

    -- (0,0-|R1) coordinate (R2)  pic[rotate=45]{strange bar=0.3}node[midway,above,sloped] {1 parsec}

    -- (2.5,0); 

    draw (-2,-0.3) -- (-2,-2) pic[rotate=45]{strange bar=0.3} -- (0,-2)node[midway,above]{1 AE} pic[rotate=45]{strange bar=0.3}

    -- (0,-0.3);

    draw[bent arrow/.list={0.125,0.625},thin] (0,5)  circle[x radius=1cm,y radius=0.15cm];

    draw[fill=pink] (TR) circle[radius=1mm] (-1,5) circle[radius=1mm];

    draw[pink,latex-,thick,shorten >=1mm] (TR) -- ++ (0.5,-1) node[right,align=left,text=black] (AP) {apparent parallax\ motion near star};

    draw[pink,latex-,thick,shorten >=1mm] (-1,5) -- (AP.west);

end{tikzpicture}

end{frame}

Welcome to TeX-SE! This is to give you a start. I apologize in advance if I have misinterpreted some elements.

documentclass[tikz,border=3.14mm]{standalone}

usetikzlibrary{arrows.meta,bending,decorations.markings,intersections,angles,quotes}

% https://tex.stackexchange.com/a/430239/121799

tikzset{% inspired by https://tex.stackexchange.com/a/316050/121799

    arc arrow/.style args={%

    to pos #1 with length #2}{

    decoration={

        markings,

         mark=at position 0 with {pgfextra{%

         pgfmathsetmacro{tmpArrowTime}{#2/(pgfdecoratedpathlength)}

         xdeftmpArrowTime{tmpArrowTime}}},

        mark=at position {#1-tmpArrowTime} with {coordinate(@1);},

        mark=at position {#1-2*tmpArrowTime/3} with {coordinate(@2);},

        mark=at position {#1-tmpArrowTime/3} with {coordinate(@3);},

        mark=at position {#1} with {coordinate(@4);

        draw[-{Stealth[length=#2,bend]}]       

        (@1) .. controls (@2) and (@3) .. (@4);},

        },

     postaction=decorate,

     },bent arrow/.style={arc arrow=to pos #1 with length 2mm},

     pics/strange bar/.style={code={draw[thick] (-#1,0) -- (#1,0);}}

}



begin{document}

begin{tikzpicture}[font=sffamily]

 draw[semithick] (80:12) arc(80:100:12) node[midway,above]{Distant stars};

 fill foreach X in {82,86,90,92,95,99} {(X:12) circle[radius=1.5pt] };

 draw[name path=A] (0,11.8) coordinate(TL) -- (0,0);

 draw[bent arrow/.list={0.125,0.625}] (0,0) circle[x radius=2cm,y radius=0.5cm];

 draw[fill=blue] (-2,0) circle[radius=2mm];

 draw[fill=yellow] (0,0) circle[radius=2mm];

 draw[name path=B] (-2,0) -- (1,11.8) coordinate(TR);

 draw[fill=pink,name intersections={of=A and B,by=I}] (I) circle[radius=2mm]

 node[left=3pt]{Near star};

 pic [angle radius=1cm,angle eccentricity=1.3,draw,"p" alias=p] {angle = TR--I--TL};

 draw[pink,latex-,thick] (p) -- ++ (1,-0.5) node[right,align=left,text=black]{parallax angle};

 draw ([xshift=5mm]I) -- ++ (3,0) coordinate (R1) pic[rotate=45]{strange bar=0.6}

 -- (0,0-|R1) coordinate (R2)  pic[rotate=45]{strange bar=0.6}

 node[midway,above,sloped] {1 parsec}

 -- (2.5,0); 

 draw (-2,-0.3) -- (-2,-2) pic[rotate=45]{strange bar=0.6} -- (0,-2)

 node[midway,above]{1 AU} pic[rotate=45]{strange bar=0.6}

 -- (0,-0.3);

 draw[bent arrow/.list={0.125,0.625},thin] (0,11.8)  circle[x radius=1cm,y radius=0.15cm];

 draw[fill=pink] (TR) circle[radius=1mm] (-1,11.8) circle[radius=1mm];

 draw[pink,latex-,thick,shorten >=1mm] (TR) -- ++ (0.5,-1) 

 node[right,align=left,text=black] (AP) {apparent parallax\ motion near star};

 draw[pink,latex-,thick,shorten >=1mm] (-1,11.8) -- (AP.west);

end{tikzpicture}

end{document}