Hjelmslev's theorem

# Theorems in plane geometry

Intercept theorem

Poncelet–Steiner theorem

Barbier's theorem

Barbier's theorem These Reuleaux polygons have constant width, and all have the…

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Bézout's theorem This article is about the number of intersection points of…

Ver teoremaFenchel's theorem

Fenchel's theorem This article is about the concept in geometry. For the…

Ver teoremaMohr–Mascheroni theorem

Mohr–Mascheroni theorem In mathematics, the Mohr–Mascheroni theorem states that any geometric construction…

Ver teoremaNewton's theorem about ovals

Newton's theorem about ovals In mathematics, Newton's theorem about ovals states that…

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Crossbar theorem The Crossbar Theorem says ray AD intersects segment BC In…

Ver teoremaHolditch's theorem

Holditch's theorem In plane geometry, Holditch's theorem states that if a chord…

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