{
  "name": "Parallel and Perpendicular Lines",
  "order": 13,
  "challenges": [
    {
      "id": "59a5801209a6acac5983b456",
      "title": "Equations of Parallel and Perpendicular Lines",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac59836564",
      "title": "Equations of Parallel Lines",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac59836565",
      "title": "Equations of Perpendicular Lines",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac59836566",
      "title": "Families of Lines",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    }
  ]
}