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Calculate the height of an equilatera...

Calculate the height of an equilateral triangle each of whose sides measures 12cm.

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  6. In Fig. 4.221, /B<90o and segment A D|B C , show that b^2=h^2+a^...

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  9. In a quadrilateral A B C D , /B=90o , A D^2=A B^2+B C^2+C D^2 , pro...

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