Iwill give brainliest to whoever is correct

HEY THERE !!

TO PROVE :- 2DE = DF

It is given that E is the mid point of line DF. So indirectly DE = DF { by the defination of mid point} 1️⃣

Now we can write that DE + EF = DF { by substitution} 2️⃣

So according to 1️⃣ and 2️⃣we can write that
DE + DE = DF
=> 2DE = DF

HENCE PROVED

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