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(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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Answer» (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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