i dont know how to post the diagram... to show all the question. if someone can tell me how to post it, i will.
Let x be the unknown side of the square, and let d be the length of the diagonal.Originally Posted by [confused]
Then by the Theorem of Pythagoras, applied to the square, or , and by applying the theorem to the rectangle, . You should draw two pictures and label them to convince yourself, one for the square and one for the rectangle. Then explain the pictures to a friend.
Equate the two terms, thus . Therefore, and .