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Garinder
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Asked: 2021-03-23T05:23:19+00:00 In:

Examine whether you can construct ∆DEF such that EF = 7.2 cm, m∠E = 110° and m∠F = 80°. Justify your answer.

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NCERT Solutions for Class 7 Mathematics Chapter 10
Important NCERT Questions
Class vii Math Chapter 10 Practical Geometry Exercise 10.4
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 3

2020-2021cbsechapter 10class7mathematicsncertpractical geometry
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    1. Best Answer

      Given: In ∆DEF, m∠E = 110° and m∠F = 80°.
      Using angle sum property of triangle
      ∠𝐷 + ∠𝐸 + ∠𝐹 = 180°
      ⟹ ∠𝐷 + 110° + 80° = 180°
      ⟹ ∠𝐷 + 190° = 180°
      ⟹ ∠𝐷 = 180° − 190° = −10°
      Which is not possible.

      Class 7 Maths Chapter 10 Exercise 10.4

      for more answers vist to:
      https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-10/

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