**Cartesian circle** — The Cartesian circle is a mistake in reasoning attributed to René Descartes.Descartes argues ndash; for example, in the third of his Meditations on First Philosophy ndash; that whatever one clearly and distinctly perceives is true: I now seem to… … Wikipedia

**Cartesian circle** — Allegedly circular reasoning used by René Descartes to show that whatever he perceives clearly and distinctly is true. Descartes argues that clear and distinct perception is a guarantor of truth because God, who is not a deceiver, would not allow … Universalium

**Cartesian circle** — noun A supposed error in reasoning attributed to René Descartes. A form of circular argument … Wiktionary

**Cartesian doubt** — Certainty series Agnosticism Belief Certainty Doubt Determinism Epistemology Estimation Fallibilism Fa … Wikipedia

**circle** — circler, n. /serr keuhl/, n., v., circled, circling. n. 1. a closed plane curve consisting of all points at a given distance from a point within it called the center. Equation: x2 + y2 = r2. 2. the portion of a plane bounded by such a curve. 3.… … Universalium

**Circle** — This article is about the shape and mathematical concept. For other uses, see Circle (disambiguation). Circle illustration showing a radius, a diameter, the centre and the circumference … Wikipedia

**Cartesian coordinate system** — Illustration of a Cartesian coordinate plane. Four points are marked and labeled with their coordinates: (2, 3) in green, (−3, 1) in red, (−1.5, −2.5) in blue, and the origin (0, 0) in purple. A Cartesian coordinate system specifies each point… … Wikipedia

**Circumscribed circle** — Circumscribed circle, C, and circumcenter, O, of a cyclic polygon, P In geometry, the circumscribed circle or circumcircle of a polygon is a circle which passes through all the vertices of the polygon. The center of this circle is called the… … Wikipedia

**Mohr's circle** — Mohr s circles for a three dimensional state of stress Mohr s circle, named after Christian Otto Mohr, is a two dimensional graphical representation of the state of stress at a point. The abscissa, , and ordinate … Wikipedia

**Great circle** — For fictional interstellar organization called Great Circle, see Andromeda (novel). A great circle divides the sphere in two equal hemispheres A great circle, also known as a Riemannian circle, of a sphere is the intersection of the sphere and a… … Wikipedia