"Petersen-Morley theorem" meaning in English

{
  "etymology_text": "Named after Johannes Trolle Petersen (later Johannes Hjelmslev) and Frank Morley.",
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      "glosses": [
        "A theorem stating that, if a, b, c are three general skew lines in space, if a′, b′, c′ are the lines of shortest distance respectively for the pairs (b,c), (c,a) and (a,b), and if p, q and r are the lines of shortest distance respectively for the pairs (a,a′), (b,b′) and (c,c′), then there is a single line meeting at right angles all of p, q, and r."
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      "raw_glosses": [
        "(geometry) A theorem stating that, if a, b, c are three general skew lines in space, if a′, b′, c′ are the lines of shortest distance respectively for the pairs (b,c), (c,a) and (a,b), and if p, q and r are the lines of shortest distance respectively for the pairs (a,a′), (b,b′) and (c,c′), then there is a single line meeting at right angles all of p, q, and r."
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
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      "wikipedia": [
        "Johannes Hjelmslev"
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  ],
  "word": "Petersen-Morley theorem"
}

{
  "etymology_text": "Named after Johannes Trolle Petersen (later Johannes Hjelmslev) and Frank Morley.",
  "forms": [
    {
      "form": "the Petersen-Morley theorem",
      "tags": [
        "canonical"
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    }
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      "glosses": [
        "A theorem stating that, if a, b, c are three general skew lines in space, if a′, b′, c′ are the lines of shortest distance respectively for the pairs (b,c), (c,a) and (a,b), and if p, q and r are the lines of shortest distance respectively for the pairs (a,a′), (b,b′) and (c,c′), then there is a single line meeting at right angles all of p, q, and r."
      ],
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        [
          "geometry",
          "geometry"
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          "right angle",
          "right angle"
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        "(geometry) A theorem stating that, if a, b, c are three general skew lines in space, if a′, b′, c′ are the lines of shortest distance respectively for the pairs (b,c), (c,a) and (a,b), and if p, q and r are the lines of shortest distance respectively for the pairs (a,a′), (b,b′) and (c,c′), then there is a single line meeting at right angles all of p, q, and r."
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        "geometry",
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        "sciences"
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        "Johannes Hjelmslev"
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  "word": "Petersen-Morley theorem"
}