Ellipse Definition
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This example demonstrates the geometric definition of an ellipse as the locus of points where the sum of distances to two fixed points (foci) is constant. It involves core concepts like ellipse equations, coordinate geometry, and geometric transformations (translation). Construction uses GeoGebra commands such as Intersect, Ellipse, Point, Segment, Midpoint, OrthogonalLine, and Textfield. Suitable for high school mathematics education to understand the algebraic and geometric definitions and properties of ellipses.
GeoGebra Commands & Parameters
Intersect(a, c) → AIntersect(a, b) → BEllipse(A, B, D) → dPoint(d) → ESegment(E, A) → eSegment(E, B) → hSegment(D, B) → iSegment(D, A) → jSegment(A, B) → mMidpoint(A, B) → IOrthogonalLine(I, m) → nTextfield(K) → فیلدمتن2Text(e) → متن2Text(h) → متن3Textfield(C) → فیلدمتن1Segment(F, G) → gPoint(g) → H