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  1. Incircle and excircles - Wikipedia

    In geometry, the incircle or inscribed circle of a triangle is the largest circle that can be contained in the triangle; it touches (is tangent to) the three sides.

  2. Incircle -- from Wolfram MathWorld

    Dec 3, 2025 · An incircle is an inscribed circle of a polygon, i.e., a circle that is tangent to each of the polygon's sides. The center of the incircle is called the incenter, and the radius of the circle …

  3. Incircle - Art of Problem Solving

    An incircle of a convex polygon is a circle which is inside the figure and tangent to each side. Every triangle and regular polygon has a unique incircle, but in general polygons with 4 or …

  4. Incircle Definition (Illustrated Mathematics Dictionary)

    Illustrated definition of Incircle: The largest circle that fits inside a polygon and is tangent to (touches without crossing) all its sides....

  5. Incircle of a Triangle - Math Open Reference

    How to construct (draw) the incircle of a triangle with compass and straightedge or ruler. The three angle bisectors of any triangle always pass through its incenter.

  6. Incircle of a Triangle: Concepts, Formulas & Problem Solving

    The greatest circle that may fit within a triangle in geometry is known as the incircle or inscribed circle, which touches (or is tangent to) all three sides of the triangle. The triangle's incenter, …

  7. Incircles and Excircles | Brilliant Math & Science Wiki

    Simply bisect each of the angles of the triangle; the point where they meet is the center of the circle! Then use a compass to draw the circle. But what else did you discover doing this? The …

  8. incircle - Wiktionary, the free dictionary

    Nov 1, 2025 · A triangle always has an incircle, whose centre (the incentre) is the point of concurrence of the angle bisectors. A polygon that has an incircle is called a circumscribed …

  9. Incircle Formulae | What is Incircle Formulae -Examples

    Incircle Formulae in Trigonometry with concepts, examples and solutions. FREE Cuemath material for JEE,CBSE, ICSE for excellent results!

  10. INCIRCLE Definition & Meaning | Dictionary.com

    INCIRCLE definition: a circle inscribed within a triangle. See examples of incircle used in a sentence.