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Problem 448 from Wernick's corpus: Mc, G, I


Problem

Given a point Mc, a point G and a point I, construct the triangle ABC.

Status

ArgoTriCS says that the problem is solvable.

Illustration

Figure of construction

Solution


  1. Using the point Mc and the point G, construct a point C (rule W01);

  2. Using the point Mc and the point I, construct a line IMc (rule W02);

    % DET: points Mc and I are not the same

  3. Using the point I and the point C, construct a line sc (rule W02);

    % DET: points I and C are not the same

  4. Using the point I and the point Mc, construct a circle k_over(I,Mc) (rule W09);

    % NDG: points I and Mc are not the same

  5. Using the point C and the line IMc, construct a line CP`c (rule W16);

  6. Using the point Mc, the line CP`c and the point C, construct a line hMc,-1/1(CP`c) (rule W15);

  7. Using the circle k_over(I,Mc) and the line hMc,-1/1(CP`c), construct a point Cfo and a point Pc (rule W04);

    % NDG: line hMc,-1/1(CP`c) and circle k_over(I,Mc) intersect

  8. Using the point Pc and the point I, construct a circle k(I,Pa) (rule W06);

    % NDG: points Pc and I are not the same

  9. Using the circle k(I,Pa), the point Mc and the point I, construct a line x3 and a line c (rule W12);

    % NDG: point Mc is outside the circle k(I,Pa)

  10. Using the point Mc and the line c, construct a line mc (rule W10b);

  11. Using the line mc and the line sc, construct a point Nc (rule W03);

    % NDG: lines mc and sc are not parallel

    % DET: lines mc and sc are not the same

  12. Using the point I and the point Nc, construct a circle k(Nc,B) (rule W06);

    % NDG: points I and Nc are not the same

  13. Using the circle k(Nc,B) and the line c, construct a point B and a point A (rule W04);

    % NDG: line c and circle k(Nc,B) intersect

animation
Construction in GCLC language

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