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Question

In A(¯¯¯a),B(¯¯b),C(¯¯c),D(¯¯¯d) are two vertices of trapezium .E(¯¯¯e),F(¯¯¯f) are midpoints of sides AD and BC, then

A
¯¯¯¯¯¯¯¯EF=K(¯¯¯¯¯¯¯¯AB)
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B
¯¯¯e=¯¯¯a+¯¯¯d2
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C
¯¯¯f=¯¯b+¯¯c2
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D
¯¯¯¯¯¯¯¯EF=K(¯¯¯¯¯¯¯¯¯CD)
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Solution

The correct options are
A ¯¯¯¯¯¯¯¯EF=K(¯¯¯¯¯¯¯¯AB)
B ¯¯¯e=¯¯¯a+¯¯¯d2
C ¯¯¯f=¯¯b+¯¯c2
D ¯¯¯¯¯¯¯¯EF=K(¯¯¯¯¯¯¯¯¯CD)
ABCD is trapezium
AB is parallel to CD
E is mid point of AD
¯¯¯e=¯¯¯a+¯¯¯d2
Hence option B is correct

F is mid point of BC
¯¯¯f=¯¯b+¯¯c2
Hence option C is correct

line EF is the joining of both mid point of both sides
So EF is parallel to both sides AB and CD
¯¯¯¯¯¯¯¯EF=K(¯¯¯¯¯¯¯¯AB)
hence option A is correct

and
¯¯¯¯¯¯¯¯EF=K(¯¯¯¯¯¯¯¯¯CD)
hence option D is correct

851123_587280_ans_0d6b9ee428f649ce8dae1dab51ab60c9.jpg

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