Question

16. In Fig. 6.11, if AB||CD, then angle EFD is equal to
(a) 50
(b) 20°
(c) 30°
of the
(d) 400
​

Answer 1

Answer:

30⁰

Step-by-step explanation:

As ABIICD,

angle ABC = angle DCE(corresponding angles)

angle EFD = angle DCE - angle CEF(exterior angle property)

= 60 - 30

= 30⁰

Actually angle ABC is equal to 60⁰ and not 70⁰.