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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

In the Adjoining Figure, If B° = A° + C°, Find B. - Mathematics

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प्रश्न

In the adjoining figure, if b° = a° + c°, find b.

योग

उत्तर

a° + b° + c° = 180° ............(straight angle)

But b° = a° + c° .........(given)

∴ a° + c° + b° = 180°

⇒ b° + b° = 180°

⇒ 2b° = 180°

⇒ b° =`(180°)/2` = 90°

Hence b° = 90°

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Introduction to Lines and Angles
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 14: Lines and Angles (Including Construction of angles) - Exercise 14 (A)

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सेलिना Concise Mathematics [English] Class 7 ICSE
अध्याय 14 Lines and Angles (Including Construction of angles)
Exercise 14 (A) | Q 8
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