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              [[[https://codepen.io/thebabydino/pen/zEbVPO]]]

- var ra = +(.5*sri).toFixed(e);
- var m = [+(sri*cosc).toFixed(e), +(sri*sinc).toFixed(e)];
- var ar = [[+(m[0] - ram*cosc).toFixed(e), +(m[1] - ram*sinc).toFixed(e)]];
- ar[1] = [+(ar[0][0] + ram*sinc).toFixed(e), +(ar[0][1] - ram*cosc).toFixed(e)];
- ar[2] = [+(m[0] + ram*sinc).toFixed(e), +(m[1] - ram*cosc).toFixed(e)];
- mp = [.5*(m[0] + ar[1][0]), .5*(m[1] + ar[1][1])]

svg(viewBox=[-d, -.5*d, 2*d, d].join(' ') 
		xmlns='http://www.w3.org/2000/svg')
	style
		| svg { fill: #{darken}; font: #{fs}px consolas, monaco, monospace }
		| svg > [d], [r], line { fill: none; stroke: #{llight}; stroke-width: #{2*sw} }
		| #e *, [d] + [x] { fill: #{llight} }
		| [x] +  [d] { marker-end: url(#e) }
		| [d] + [x] { font: 1em times new roman, serif }
		| [d] ~ [x] { font-style: italic }
		| [r] + * + [d] { fill: hsla(0, 0%, 83%, .7) }
		| line, [y2] ~ [d] { stroke: #{purple}; stroke-width: #{3*sw} }
		| [r] + [d] { stroke: #999 }
		| line ~ [r], [y2] ~ [d] { stroke: #{darken} }
		| line ~ [r] { fill: #{orange} }
		| [d] + * + [d] { stroke: #cb0; fill: rgba(255,238,51,.7) }
		| [y2] { stroke: #b9c }
		| [d] + [d] { stroke: #d97 }
		| [y2] + * + [d] { stroke: #{tomato} }
		| [cx] + line { stroke: #{orange}; stroke-width: #{4*sw} }
		| tspan { font-size: .5em }
	- for(var i = 0; i < sp; i++) {
		- var ca = i*sbac;
		- pts.push([+(srco*Math.cos(2*ca)).toFixed(e), +(srco*Math.sin(2*ca)).toFixed(e)]);
	- }
	marker#e(markerWidth=ad markerHeight=ad 
						viewBox='0 -4 8 8' 
						orient='auto' refX='7')
		path(d='M8 0 0-4V4')
	//-angle val labels
	text(x=srco y=.8*fs) 0°
	text(x=(pts[3][0] - .5*fs) y=(pts[3][1] + fs)) 72°
	text(x=(pts[1][0] - 1.875*fs).toFixed(e) y=pts[1][1] + fs) 144°
	//-axes
	path(d=`M${-ax} 0H${ax}`)
	text(x=ax - .5*fs y=-.5*fs) x
	text(x=(-.75*fs).toFixed(e) y=-.2*fs) O
	text(x=+(m[0] - .5*fs).toFixed(e) y=+(m[1] + fs).toFixed(e)) M
	path(d=`M0${-ax}V${ax}`)
	text(x=.4*fs y=(ax - .2*fs)) y
	//-inner pentagon inradius
	circle(r=+sri.toFixed(e))
	//-polygon
	path(d=`M${pts.slice(1).join(' ')} ${pts[0]}M${pts[3]} ${m}`)
	//-right triangle background
	path(d=`M${pts[0]} 0 0 ${m}`)
	//-pentagram circumradius
	circle(r=srco)
	//-radial
	path(d=`M0 0 ${ra} 0A${ra} ${ra} 0 0 1 ${+(ra*coss).toFixed(e)} ${+(ra*sins).toFixed(e)}`)
	//-circumradii
	line(x2=srco)
	line(x2=pts[1][0] y2=pts[1][1])
	//-perpendicularity
	path(d=`M${ar.join(' ')}`)
	//-edge
	path(d=`M${pts[0]} ${m}`)
	path(d=`M${m} ${pts[1]}`)
	- for(var i = 0; i < sp; i++) {
		circle(cx=pts[i][0] != 0 ? pts[i][0] : null 
					 cy=pts[i][1] != 0 ? pts[i][1] : null r=i?pr1:pr)
	- }
	line(x2=m[0] y2=m[1])
	circle(cx=mp[0] cy=mp[1] r=.2*pr)
	circle(r=pr)
	circle(cx=m[0] cy=m[1] r=pr)
	text(x=srco y=-.2*fs) V<tspan>0</tspan>
	text(x=pts[1][0] - 1.5*fs y=pts[1][1]) V<tspan>1</tspan>

// minimal SVG
<svg viewBox='-2500 -1250 5000 2500' xmlns='http://www.w3.org/2000/svg'><style>svg{fill:#333;font:150px consolas,monaco,monospace}svg>[d],[r],line{fill:none;stroke:#ccc;stroke-width:10}#e *,[d]+[x]{fill:#ccc}[x]+[d]{marker-end:url(#e)}[d]+[x]{font:1em times new roman,serif}[d]~[x]{font-style:italic}[r]+*+[d]{fill:hsla(0,0%,83%,.7)}line,[y2]~[d]{stroke:#95a;stroke-width:15}[r]+[d]{stroke:#999}line~[r],[y2]~[d]{stroke:#333}line~[r]{fill:#f90}[d]+*+[d]{stroke:#cb0;fill:rgba(255,238,51,.7)}[y2]{stroke:#b9c}[d]+[d]{stroke:#d97}[y2]+*+[d]{stroke:#b53}[cx]+line{stroke:#f90;stroke-width:20}tspan{font-size:.5em}</style><marker id='e' markerWidth='10' markerHeight='10' viewBox='0 -4 8 8' orient='auto' refX='7'><path d='M8 0 0-4V4'/></marker><text x='988' y='120'>0°</text><text x='230' y='1090'>72°</text><text x='-1080' y='731'>144°</text><path d='M-1230 0H1230'/><text x='1155' y='-75'>x</text><text x='-113' y='-30'>O</text><text x='19' y='440'>M</text><path d='M0-1230V1230'/><text x='60' y='1200'>y</text><circle r='305'/><path d='M-799 581 305-940 305 940-799-581 988 0M305 940 94 290'/><path d='M988 0 0 0 94 290'/><circle r='988'/><path d='M0 0 153 0A153 153 0 0 1-124 90'/><line x2='988'/><line x2='-799' y2='581'/><path d='M69 214 145 189 170 265'/><path d='M988 0 94 290'/><path d='M94 290-799 581'/><circle cx='988' r='25'/><circle cx='-799' cy='581' r='18'/><circle cx='305' cy='-940' r='18'/><circle cx='305' cy='940' r='18'/><circle cx='-799' cy='-581' r='18'/><line x2='94' y2='290'/><circle cx='112' cy='240' r='5'/><circle r='25'/><circle cx='94' cy='290' r='25'/><text x='988' y='-30'>V<tspan>0</tspan></text><text x='-1024' y='581'>V<tspan>1</tspan></text></svg>
            
          
!
            
              body {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	margin: 0;
	height: 100vh;
}

svg { display: block }
            
          
!
            
              // minimal SVG https://codepen.io/thebabydino/pen/eGLoba?editors=1000
            
          
!
999px
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