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CBSE Class 7 Answered

find
question image
Asked by josephjoice13 | 12 Aug, 2020, 06:13: PM
answered-by-expert Expert Answer
Q. 8:
Solution:
 
From the figure,
 
begin mathsize 16px style In space increment ABF comma straight m angle AFB space equals space 180 degree minus space left parenthesis straight m angle straight A space plus straight m angle ABF right parenthesis space space... space sum space of space all space the space angles space of space straight a space triangle space is space 180 degree. space space space space space space space space space space space space space space space space equals space 180 degree minus space left parenthesis 52 degree plus space 90 degree right parenthesis space equals 180 degree minus space 142 degree equals 38 degree straight m angle AFB plus space straight z degree space equals space 180 degree space.... space linear space pair rightwards double arrow space straight z degree equals space 180 degree space minus space 38 degree equals space 142 degree In space square BCDF comma straight x degree equals space 360 degree minus left parenthesis 90 degree plus space 90 degree plus 142 degree right parenthesis space... space sum space of space all space the space angles space of space straight a space quadrilateral space is space 360 degree. rightwards double arrow straight x degree equals 38 degree In increment BCE comma straight y degree equals space 180 degree minus left parenthesis 38 degree plus 90 degree right parenthesis equals space 52 degree end style
Answered by Yasmeen Khan | 12 Aug, 2020, 08:25: PM

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