Prove that the sum of two consecutive an...

Prove that the sum of two consecutive angles of a parallelogram is `180^(@).`

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NAGEEN PRAKASHAN ENGLISH-QUADRILATERALS-Exercise 8a

In the given figure, ABCD is a rohombus with A=67^(@). If DEC is an eq...
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If the adjacent angles of a parallelogram are in the ratio 1/3:1/2. Fi...
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Prove that the sum of two consecutive angles of a parallelogram is 180...
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One angle of a parallelogram is 60^(@). Find its remaining angles.
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One diagonal of a parallelogram biscets its one of the angles. Show th...
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The opposite angles of a parallelogram are (3x-2)^(@)and(150-x)^(@). F...
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In the adjoining figure, ABCD is a parallelogram. If angleABC=125^(@),...
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In a parallelogram, one angleis twice of its consecutiv angle. Find al...
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In a parallelogram ABCD, AX and CY are the bisectors of angleAandangle...
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In a parallelogram PQRS, PX and QY are the perpendiculars drawn from P...
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In a parallelogram ABCD, the bisector of angleA bisects the line B at ...
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In a parallelogram ABCD, angleBCD=60^(@) If the bisectors AP and BP of...
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In the adjoining figure, DeltaPQR is formed by the sides PQ, QR and RP...
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X and Y are the mid-points of the opposite sides AB and DC of a parall...
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Two points X and Y lie on the diagonal BD of a parallelogram ABCD such...
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In the adjoining figure, DeltaABC is an isosceles triangle in which AB...
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AB and CD are two parallel lines and a transversal 'l' intersects thes...
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In the adjoining figure squareABCD is a parallelogeam. Points X and Y ...
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In the adjoining figure, ABCDEF is a regular hexagon. Prove that squar...
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Two triangles DeltaABC and Delta DEF are given such that AB"||"DE,BC"|...
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