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If ABCD is a parallelogram DeltaADN and ...

If ABCD is a parallelogram `DeltaADN` and `DeltaABC` are isosceles triangles, then find `/_BAC`.

A

`112^(@)`

B

`140^(@)`

C

`48^(@)`

D

`32^(@)`

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Knowledge Check

  • The area of a parallelogram ABCD is equal to that right angled isosceles triangle whose hypotenuse is l cm. If O is a point inside the parallelogram ABCD then sum of areas of DeltaAOBandDeltaCOD is.

    A
    `l^(2)/(2)"cm"^(2)`
    B
    `l^(2)/(4)"cm"^(2)`
    C
    `l^(2)/(8)"cm"^(2)`
    D
    `l^(2)/(16)"cm"^(2)`

  • In the adjoining figure, ABCD is a parallelogram. find the measure of angleBCE .

    A
    `40^(@)`
    B
    `140^(@)`
    C
    `60^(@)`
    D
    `80^(@)`

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