Question

In given figure, calculate angle DEF (figure in attachment)​

Answer 1

Answer:

120

Step-by-step explanation:

I think so but I am not so sure about this

Answer 2

Answer:

First , we have to calculate angle BDE

180 = angle ADE + angle BDE

180 = 100 + angle BDE

angle BDE = 80

Now in triangle BDE

angle DBE + angle BED + angle EDB = 180

40 + angle BED + 80 = 180

angle BED = 60

FINALLY,

angle CED + angle DEF = 180 ( Property of straight line )

60 + angle DEF = 180

angle DEF = 60

Step-by-step explanation:

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