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Diagonals of a parallelogram ABCD inters...

Diagonals of a parallelogram ABCD intersects at O. if `angleBOC=90^@` and `angleBDC=50^@`. Then find `angleOAB`.

A

`40^@`

B

`10^@`

C

`90^@`

D

`50^@`

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MODERN PUBLICATION-QUADRILATERALS-EXERCISE
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  2. ABCD is a rhombus such that /ACB = 40^@. Then /ADB is

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  3. Diagonals of a parallelogram ABCD intersects at O. if angleBOC=90^@ an...

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  4. ABCD is a trapezium in which AB || DC. M and N are the mid-points of A...

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  6. In the figure ABCD is a parallelogram in which angleBDC=45^@ and angle...

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  7. In the figure ABCD is a llgm and E is the mid point of BC. Also DE and...

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  8. In a trapezium ABCD, if E and F be the mid points of the diagonals AC ...

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  9. Two parallelograms are on equal bases andbetween the same parallels. T...

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  10. If angles A, B, C and D of the quadrilateral ABCD, taken in order, are...

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  13. ABCD is a rhombus such that /ACB = 40^@. Then /ADB is

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  15. The quadrilateral formed by joining the mid-points of the sides of a q...

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  16. If angles A, B, C and D of the quadrilateral ABCD, taken in order, are...

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  17. If bisectors of /A and /B of a quadrilateral ABCD intersect each other...

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  18. If APB and CQD are two parallel lines, then the bisectors of the angle...

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