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  1. Chapter 6 Class 7 Triangle and its Properties
  2. Serial order wise
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Ex 6.1, 2 Draw rough sketches for the following: (a) In ∆ABC, BE is a median.As E is the mid point of AC, BE is median of ∆ABC. Ex 6.1, 2 Draw rough sketches for the following: (b) In ∆PQR, PQ and PR are altitudes of the triangle. Only in right angled triangle, Two side are altitudes. So, drawing ∆PQR as right angled triangle, right angled at P. As PQ ⊥ PR and PR ⊥ PQ PQ and PR are altitudes of ∆PQR Ex 6.1, 2 Draw rough sketches for the following: (c) In ∆XYZ , YL is an altitude in the exterior of the triangle. In an obtuse angled triangle, the altitude is in exterior of triangle. Drawing Δ XYZ as an obtuse angled triangle As YL ⊥ LZ Where LZ is extended XZ So, YL is altitude in exterior of ∆XYZ

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.