While solving the puzzle, Sonali remembered she had to do homework. Her homework was to find the length of EF. If AB = 5 cm and CA= 7cm, given that AD is the line of symmetry for the figure. Help her to finish her homework quickly.

1cm

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2cm

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3cm

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1.5cm

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Solution

The correct option is B 2cm
Since, AD is the line of symmetry, the part of the figure to the right of this line is same as the part of the figure to the left of it.Therefore, AB= AE= 5 cm and CA= FA = 7cm.Hence EF= FA - AE i.e. EF= 7- 5= 2cm.

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While solving the puzzle, Sonali remembered she had to do homework. Her homework was to find the length of EF. If AB = 5 cm and CA= 7cm, given that AD is the line of symmetry for the figure. Help her to finish her homework quickly.

The correct option is B 2cmSince, AD is the line of symmetry, the part of the figure to the right of this line is same as the part of the figure to the left of it.Therefore, AB= AE= 5 cm and CA= FA = 7cm.Hence EF= FA - AE i.e. EF= 7- 5= 2cm.

The correct option is B 2cm
Since, AD is the line of symmetry, the part of the figure to the right of this line is same as the part of the figure to the left of it.Therefore, AB= AE= 5 cm and CA= FA = 7cm.Hence EF= FA - AE i.e. EF= 7- 5= 2cm.