Question

tell q 4 and 5
urgent

Answer 1

Question 4 Question 5
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Answer 2

que.4 ). AC=BC
AC+AC = BC+AC (i)
BC+AC= AB (ii)
from (i) and (ii)
AC+AC=AB
2AC=AB
AC=1/2AB (H.P)

que.5) previously we proved AC=1/2AB . (which means C is midpt.)
let D be another midpt
therefore , AD=1/2 AB
From these , AD=AB
but this is not possible hence both the points are coincidence ..(H.P.)