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ICSE Class 9 Answered

How is A = B proved below in Q.24 in Selina book solution?


In right BEC and BFC,

BE = CF[Given]

BC = BC[Common]

BEC = BFC[each = 900]

therefore increment BEC space approximately equal to increment BFC space left square bracket RHS right square bracket rightwards double arrow angle straight B equals angle straight C Similarly comma angle straight A equals angle straight B Hence comma space angle straight A equals angle straight B equals angle straight C rightwards double arrow AB equals BC equals AC

Therefore, ABC is an equilateral triangle.

Asked by Vidita Ravle | 19 Sep, 2015, 11:24: AM
answered-by-expert Expert Answer
Answered by Vimala Ramamurthy | 20 Sep, 2015, 10:11: PM

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