the y -axis is a line of symmetry for the figure ABCD where A B have coordinate (3,6),(-3,4)respectively.
I) find the coordinate of C and D.
II) name the figure ABCD and find its area.
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Assuming C and D are reflections of A and B (respectively)
Therefore A on reflection by Y-axis = C co-ordinates
= (-(3), 6)
= (-3,6)
Therefore B on reflection by Y-axis = D co-ordinates
= (-3, -(4))
= (-3,-4)
Figure ACBD is a rectangle. (you need to plot the points on a graph)
Area = length*breadth
On observing graph,
length = 6 units
breadth = 2 units
Therefore, area = 6*2 = 12 sq.units
Therefore A on reflection by Y-axis = C co-ordinates
= (-(3), 6)
= (-3,6)
Therefore B on reflection by Y-axis = D co-ordinates
= (-3, -(4))
= (-3,-4)
Figure ACBD is a rectangle. (you need to plot the points on a graph)
Area = length*breadth
On observing graph,
length = 6 units
breadth = 2 units
Therefore, area = 6*2 = 12 sq.units
QwertyZoom:
It's ok, I understand :), and good night
what iz ur name.
m Rajlaxmi Kashyap:)
aditya
oh .. u r in class ..?
i thought u r a grl ..
Haha... no. I'm in 10th
m a bord candidate icse...gud nyt.. n bye.
:) :)
hlo.
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