Question 69

Draw the images of points A and B in line $l$ of the figure and name them as A` and B`, respectively. Measure AB and A`B`. Are they equal?

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Solution

Image of line segment AB is A'B' as shown below.

Now, it is clear that the length of line segment AB is equal to the length of a line segment A'B' as the shape and size of an object does not change when the image is taken in a plane mirror (line $l$ in this case).

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Question 69 Draw the images of points A and B in line l of the figure and name them as A` and B`, respectively. Measure AB and A`B`. Are they equal?

Image of line segment AB is A'B' as shown below. Now, it is clear that the length of line segment AB is equal to the length of a line segment A'B' as the shape and size of an object does not change when the image is taken in a plane mirror (line l in this case).

Question 69

Draw the images of points A and B in line $l$ of the figure and name them as A` and B`, respectively. Measure AB and A`B`. Are they equal?

Image of line segment AB is A'B' as shown below.

Now, it is clear that the length of line segment AB is equal to the length of a line segment A'B' as the shape and size of an object does not change when the image is taken in a plane mirror (line $l$ in this case).