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Ad and Bc Are Equal Perpendiculars to a Line Segment Ab. If Ad and Bc Are on Different Sides of Ab Prove that Cd Bisects Ab. - Mathematics

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प्रश्न

AD and BC are equal perpendiculars to a line segment AB. If AD and BC are on different sides of AB prove that CD bisects AB.

योग
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उत्तर


In ΔAOD and ΔBOC,
∠ AOD = ∠ BOC     ....(vertically opposite angles)
∠ DAO = ∠ CBO      ....(each 90°)
AD = BC                  ....(given)
∴ ΔAOD ≅ ΔBOC    ...(by AAS congruence criterion) 
⇒ AO = BO             ...(c.p.c.t.)
⇒ O is the mid-point of AB.
Hence, CD bisects AB.

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Criteria for Congruence of Triangles
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 9: Triangles [Congruency in Triangles] - Exercise 9 (B) [पृष्ठ १२६]

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सेलिना Concise Mathematics [English] Class 9 ICSE
अध्याय 9 Triangles [Congruency in Triangles]
Exercise 9 (B) | Q 16 | पृष्ठ १२६

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