Q : 12 ABCD is a trapezium in which AB || CD and AD = BC (see Fig. 8.23). Show that
[Hint : Extend AB and draw a line through C parallel to DA intersecting AB produced at E.]
Given: ABCD is a trapezium in which and
To prove :
Proof: Let A be 1, ABC be 2, EBC be 3, BEC be 4.
Thus, (Since , )
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