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The angle between the altitudes of a ...

The angle between the altitudes of a parallelogram, through the same vertex of an obtuse angle of the parallelogram is `60^0dot` Find the angles of parallelogram.

Text Solution

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The correct Answer is:
`60^(@), 120^(@),60^(@),120^(@)`
`angle ABM =90^(@) and angle MBN=60^(@) rArr angle ABN=30^(@).`
In `triangle ABN," we have " angle A = 60^(@).`
And so, ` angle B = 120^(@), angle C = 60^(@), angle D=120^(@).`
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