In figure, two lines AB and CD intersect each other at the point O such that BC∥DA. Show that O is the mid-point of both the line-segments AB and CD.
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Q2
In fig 7.1, two lines AB and CD intersect each other at the point O such that BC∥DA and BC=DA. Show that O is the mid point of both the line-segments AB and CD.
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Q3
Line-segment AB is parallel to another line-segment CD.O is the mid-point of AD. Show that O is also the midpoint of BC.
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Q4
Let AB and CD be two line segments such that AD and BC intersect at O. Suppose AO = OC and BO = OD. Prove that AB = CD.