Ellipse and Polar Line Connection
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This example demonstrates the relationship between an ellipse and its polar line. Key mathematical concepts include the geometric properties of ellipses and the definition of polar lines. Using GeoGebra commands such as Circle, Point, Line, Intersect, etc., the construction of the ellipse and its polar line is illustrated. Suitable for high school mathematics education, particularly in the study of coordinate geometry and conic sections.
GeoGebra Commands & Parameters
Circle(A, B) → cPoint(c) → CLine(A, C) → fPoint(xAxis) → DLine(C, D) → gMidpoint(D, C) → EOrthogonalLine(E, g) → hIntersect(f, h) → FLine(D, F) → iLocus(F, C) → loc1Midpoint(A, D) → GOrthogonalLine(G, xAxis) → jSegment(D, F) → kLine(F, xAxis) → lSegment(A, F) → mOrthogonalLine(E_d, l) → pIntersect(l, p) → HSegment(F, H) → qDistance(D, J) → distanceDJDistance(G, J) → distanceGJDistance(G, D) → distanceGDAngle(D, A, F) → αVector(A, F) → uCircle(I, 1) → dCircle(I, 2) → rCircle(I, 3) → c_1Circle(I, 4) → d_1Circle(I, 5) → e_1Circle(I, 6) → f_1Circle(I, 7) → g_1Circle(I, 8) → h_1Circle(I, 9) → k_1Circle(I, 10) → p_1Circle(I, 11) → q_1Circle(I, 12) → r_1Circle(I, 13) → s_1Circle(I, 14) → t_1Circle(I, 15) → c_2Segment(G, K) → bSegment(G, J) → i_1Segment(R, S) → j_1Segment(D, K) → l_1Midpoint(I, D) → TIntersect(p, q) → UAngle(D, I, F) → βCurveCartesian((cos(t) * E_b^(2) / E_a / (1 - (E_c / E_a * cos(t)))), (sin(t) * E_b^(2) / E_a / (1 - (E_c / E_a * cos(t)))), t, 0, (2 * π)) → wDistance(D, p) → distanceDpIntersect(p, xAxis) → VSegment(S, W) → m_1Length(u) → a_1Distance(I, F) → distanceIFTableText({{A2, B2}, {A3, B3}, {A4, B4}, {A5, B5}, {A6, B6}, {A7, B7}, {A8, B8}, {A9, B9}, {A10, B10}, {A11, B11}, {A12, B12}, {A13, B13}}, "|_") → text1