यदि m∠C = m∠Z और AC = XZ है, तो ΔABC और ΔXYZ के सर्वांगसम होने के लिए निम्नलिखित में से कौन सी शर्त आवश्यक है?

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SSC CGL 2023 Tier-I Official Paper (Held On: 14 Jul 2023 Shift 1)
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  1. AB = AC
  2. BC = YZ
  3. AB = XY
  4. BC = AB

Answer (Detailed Solution Below)

Option 2 : BC = YZ
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PYST 1: SSC CGL - General Awareness (Held On : 20 April 2022 Shift 2)
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गणना:

सर्वांगसम त्रिभुजों ΔABC और ΔXYZ में, यदि m∠C = m∠Z और AC = XZ है, तो,

भुजा-कोण-भुजा स्वयं सिद्ध प्रमाण के अनुसार, सर्वांगसमता के लिए दोनों त्रिभुजों के दोनों भुजाएँ और सम्मिलित कोण बराबर होनी चाहिए,

⇒ ∠ABC = ∠XYZ और AB = XY

और,

⇒ ∠ACB = ∠YZX

तो, BC = YZ

∴ सही कथन BC = YZ है।

Mistake Points

कृपया ध्यान दें कि भुजा-कोण-भुजा अभिधारणा के अनुसार, सर्वांगसमता के लिए दोनों त्रिभुजों के दोनों भुजाएँ और सम्मिलित कोण बराबर होनी चाहिए।

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