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    Description
    English: The two triangles are similar (but not congruent) because the angles are the same. For line 1, the "run" is negative, as shown. Setting the ratios equal yields Therefore
    Date
    Source Own work
    Author Guy vandegrift

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    Captions

    Proof that slopes obeying <math>m-1m_2=-1</math> imply perpendicular lines

    Items portrayed in this file

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    mathematical proof exercise

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    some value

    author name string: Guy vandegrift
    Wikimedia username: Guy vandegrift
    URL: https://commons.wikimedia.org/wiki/User:Guy_vandegrift

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    copyrighted, dedicated to the public domain by copyright holder

    copyright license

    Creative Commons CC0 License

    source of file

    original creation by uploader

    inception

    28 January 2024

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    26,493 byte

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    fa2fde4e152c88bd9a45bb9c05f750689531d5c2

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    Date/TimeThumbnailDimensionsUserComment
    current01:34, 29 January 2024Thumbnail for version as of 01:34, 29 January 2024149 × 129 (26 KB)Guy vandegriftfixed arrows
    22:15, 28 January 2024Thumbnail for version as of 22:15, 28 January 2024149 × 129 (21 KB)Guy vandegriftUploaded own work with UploadWizard

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