in case of parallelogram prove that : the bisector of any two adjascent angles intersect at 90 degree. the bisectors of opposite angles are parallell to each other.
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as we know that opposite sides of parallelogram are parallel so the two adjacent angles will be Co interior angles
i.e.,there sum is 180 degree
sum of half of these angles will be 90 degree
now using angle sum property in the triangle formed by these bisectors we can prove that.
i.e.,there sum is 180 degree
sum of half of these angles will be 90 degree
now using angle sum property in the triangle formed by these bisectors we can prove that.
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