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Question

Hence, AEB=90
Say true or false.

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A
True
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B
False
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C
Ambiguous
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D
Data insufficient
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Solution

The correct option is A True
In DBE,
DB=BE
Hence, DBE=DEB=x (I)
In DAE,
DA=AE
Hence, DAE=DEA=y (II)
Now, In ABE,
ABE+BAE+AEB=180o (Sum of angles of triangle)
ABE+BAE+BED+DEA=180o
x+x+y+y=180o
x+y=90o
DEB+DEA=90o
AEB=90

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