State the co-ordinates of the following points under reflection in y-axis :

(i) (6, -3) (ii) (-1, 0) (iii) (-8, -2)

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Solution

(i) (6, -3)......................... (-6,-3)
(ii) (-1, 0).......................(1,0)
(iii) (-8, -2).....................(8,-2)

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State the co-ordinates of the following points under reflection in x-axis :

(i) (3, 2) (ii) (-5, 4) (ii) (0, 0)

State the co-ordinates of the following points under reflection in the line y - 0;

(i) (-3, 0) (ii) (8, -5) (iii) (-1, -3)

State the co-ordinates of the followingpoints under reflection in origin :

(i) (-2, -4) (ii) (-2, 7) (iii) (0, 0)

Points A and B have co-ordinates (3, 4) and (0, 2) respectively. Find the image :

(a) A' of A under reflection in the x-axis.

(b) B' of B under reflection in the line AA".

(d) B" of B under reflection in the line AA".

(i) Plot the points A (3, 5) and B (-2, -4). Use 1 cm = 1 unit on both the axes.

(ii) A' is the image of A when reflected in the x-axis. Write down the co-ordinates of A' and plot it on the graph paper.

(iii) B' is the image of B when reflected in the y-axis, followed by reflection in the origin. Write down the co-ordinates of B' and plot it on the graph paper.

(iv) Write down the geometrical name of the figure AA'BB'.

(v) Name two invariant points under reflection in the x-axis.

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State the co-ordinates of the following points under reflection in y-axis : (i) (6, -3) (ii) (-1, 0) (iii) (-8, -2)

(i) (6, -3)......................... (-6,-3) (ii) (-1, 0).......................(1,0) (iii) (-8, -2).....................(8,-2)

State the co-ordinates of the following points under reflection in y-axis :

(i) (6, -3) (ii) (-1, 0) (iii) (-8, -2)

(i) (6, -3)......................... (-6,-3)
(ii) (-1, 0).......................(1,0)
(iii) (-8, -2).....................(8,-2)