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- ...le ''BAC'' is [[Right angle (geometry)|right]] (unless ''C''=''A''), see [[Pythagorean theorem]] (orthogonality is not only sufficient but also necessary for the equality10 KB (1,620 words) - 03:09, 8 March 2024
- ...le ''BAC'' is [[Right angle (geometry)|right]] (unless ''C''=''A''), see [[Pythagorean theorem]] (orthogonality is not only sufficient but also necessary for the equality10 KB (1,620 words) - 03:09, 8 March 2024
- Another famous proposition in Book I is number 47: the [[Pythagorean theorem]], which is proved by a technique still used in high school texts. This is8 KB (1,314 words) - 11:25, 13 January 2020
- where, by the [[Pythagorean theorem]],11 KB (1,702 words) - 13:31, 22 April 2011
- ...Trigonometry]] combines space and number, and encompasses the well-known [[Pythagorean theorem]]. The modern study of space generalizes these ideas to include higher-dim30 KB (4,289 words) - 16:03, 20 January 2023
- ...''h'' and the other side half the distance traveled, say ''L''/2. By the [[Pythagorean theorem]], the hypotenuse must be greater than ''h'', in fact {{nowrap|√(''h''<su35 KB (5,836 words) - 17:02, 22 March 2024