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Asked by riyamaths | 19 Oct, 2018, 09:25: PM
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begin mathsize 16px style According space to space the space figure comma angle EBC space equals space fraction numerator arc space BC over denominator 2 end fraction equals 55 degree arc space BC space equals space 110 degree Also comma angle CDF equals fraction numerator arc space CD over denominator 2 end fraction equals 65 degree arc space CD space equals space 130 degree Arc space BC space plus space arc space CD thin space plus thin space arc space DB space equals space 360 degree 110 degree plus 130 degree plus arc space DB space equals space 360 degree arc space DB space equals space 120 degree angle BCD equals fraction numerator arc space DB over denominator 2 end fraction equals 60 degree angle CBA plus angle EBC equals 180 degree space space space space space space space space space space space space space space space space space linear space pair angle CBA plus 55 degree equals 180 degree angle CBA equals 125 degree Also comma angle CDF plus angle CDA equals 180 degree angle CDA plus 65 degree equals 180 degree angle CDA equals 115 degree In space quadrilateral space ABCD comma angle CBA plus angle BCD plus angle CDA plus angle BAD equals 360 degree 125 degree plus 60 degree plus 115 degree plus angle BAD equals 360 degree angle BAD equals 60 degree end style
Answered by Sneha shidid | 23 Oct, 2018, 10:00: AM

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CBSE 10 - Maths
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