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 | 19th Sep, 2015, 11:24: AM

Expert Answer:

Answered by Vimala Ramamurthy | 20th Sep, 2015, 10:11: PM