var json1 =({
  "?xml": {
    "@version": "1.0",
    "@encoding": "UTF-8",
    "@standalone": "no"
  },
  "LO": {
    "VOText": {
      "VO": [
        {
          "@id": "1",
          "@mp3ref": "pytlc01.mp3",
          "#text": "تنص نظرية فيثاغورس على أنه، في المثلث القائم الزاوية، مربع طول الوتر يساوي مجموع مربعي طولي ضلعي الزاوية القائمة. جـ هو طول الوتر."
        },
        {
          "@id": "2",
          "@mp3ref": "pytlc02.mp3",
          "#text": "جـ² = أ ² + ب ²"
        },
        {
          "@id": "3",
          "@mp3ref": "pytlc03.mp3",
          "#text": "عكس النظرية صحيح أيضاً. ففي أي مثلث إذا تحقق أن مربع طول أحد أضلاعه يساوي مجموع مربعي طولي الضلعين الآخرين كان المثلث قائم الزاوية."
        },
        {
          "@id": "4",
          "@mp3ref": "pytlc04.mp3",
          "#text": "If the length of two sides in a right-angled triangle is known, then the length of the third side can be calculated using Pythagoras' Theorem."
        },
        {
          "@id": "5",
          "@mp3ref": "pytlc05.mp3",
          "#text": "Example 1. Find the length of the side marked 'x' in the diagram.The length of the hypotenuse is 13."
        },
        {
          "@id": "6",
          "@mp3ref": "pytlc06.mp3",
          "#text": "Thirteen squared is equal to 'x' squared plus five squared. 169 is equal to 'x' squared plus 25. The equation can be rearranged to give 'x' squared equal to 169 - 25. Therefore 'x' is equal to the square root of 144 which is twelve."
        },
        {
          "@id": "7",
          "@mp3ref": "pytlc07.mp3",
          "#text": "Example 2. The three sides of the triangle 'abc' measure 15, 36, and 39 respectively."
        },
        {
          "@id": "8",
          "@mp3ref": "pytlc08.mp3",
          "#text": "[bc] is the hypotenuse. If the triangle is right-angled then |bc|² will be equal to |ac|² plus |ab|²."
        },
        {
          "@id": "9",
          "@mp3ref": "pytlc09.mp3",
          "#text": "|bc|² = 1521 |ac|² = 1296 |ab|² = 225 |ac|² plus |ab|² = 1296 plus 225 which is equal to 1521. Therefore the triangle is right-angled."
        }
      ]
    },
    "Labels": {
      "Label": [
        {
          "@id": "1",
          "#text": "أ"
        },
        {
          "@id": "2",
          "#text": "ب"
        },
        {
          "@id": "3",
          "#text": "جـ"
        },
        {
          "@id": "4",
          "#text": "جـ² = أ ² + ب ²"
        },
        {
          "@id": "5",
          "#text": "س"
        },
        {
          "@id": "6",
          "#text": "13"
        },
        {
          "@id": "7",
          "#text": "5"
        },
        {
          "@id": "8",
          "#text": "جد قيمة س"
        },
        {
          "@id": "9",
          "#text": "13² = س ²+ 5 ²"
        },
        {
          "@id": "10",
          "#text": "169 = س ² 25 +"
        },
        {
          "@id": "11",
          "#text": "² = 169 - 25"
        },
        {
          "@id": "12",
          "#text": "س = √144"
        },
        {
          "@id": "13",
          "#text": "= 12"
        },
        {
          "@id": "14",
          "#text": "15"
        },
        {
          "@id": "15",
          "#text": "36"
        },
        {
          "@id": "16",
          "#text": "39"
        },
        {
          "@id": "17",
          "#text": "|ب جـ|²  = 1521"
        },
        {
          "@id": "18",
          "#text": "|أ جـ|² = 1296"
        },
        {
          "@id": "19",
          "#text": "|أ ب|² = 225"
        },
        {
          "@id": "20",
          "#text": "1296 + 225 = 1521 = |ب جـ|²"
        },
        {
          "@id": "21",
          "#text": "لذلك فالمثلث هو قائم الزاوية"
        },
        {
          "@id": "22",
          "#text": "هـ"
        },
        {
          "@id": "23",
          "#text": "3سم"
        },
        {
          "@id": "24",
          "#text": "4سم"
        },
        {
          "@id": "25",
          "#text": "10سم"
        },
        {
          "@id": "26",
          "#text": "8سم"
        },
        {
          "@id": "27",
          "#text": "أ"
        },
        {
          "@id": "28",
          "#text": "ب"
        },
        {
          "@id": "29",
          "#text": "هـ² = أ ² ب + ²"
        }
      ]
    }
  }
});
