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Rahul kumar Best Answer
Please refer to tha attached figure for detail about the contour pattern of any beds in a valley (rule of V). You can think about it in 3D by using a paper and visualising the contour pattern and bed dip.
sir , in the 3rd fig, strata dip upstream means beds are on upwards side of rock.
Strata dips upstream means strata is dipping in opposite to the flow direction of river or dip direction of the valley.