Question

please answer it ...........

Answer 1

in triangle ABD
$(ab \: + bd) > ad \: \: (sum \: of \:any \: 2 \: sides \:of \: the \: triangle \: is \: greater \: than \: the \: 3side)$
In triangle ADC

ac + dc >ad ( ")


ac + dc > ad (1)
ab + bd > ad (2)

add 1 and 2

ac + dc + ab + bd =2ad

(bd +dc =bc)(we know)

ac +bc+ca=2ad

Answer 2

Answer:

v good

Step-by-step explanation:

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