{ "name": "Properties and Proofs", "order": 8, "challenges": [ { "id": "59a5801209a6acac5983b499", "title": "Introduction to Proofs", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a292", "title": "Properties of Equality and Congruence", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a293", "title": "Proofs: Angle Pairs and Segments", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a294", "title": "Proofs involving Parallel and Perpendicular Lines", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a295", "title": "Parallelogram Proofs", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a296", "title": "Proofs Involving Triangles", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a297", "title": "Indirect Proof in Algebra and Geometry", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] } ] }