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Identifying Parallel Lines

Identifying Parallel Lines
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2019-03-07 02:40
FunctionCoordinate GeometryGeometric Construction
This example demonstrates how to identify parallel lines, involving core math concepts like parallel line properties and criteria. It uses GeoGebra commands like Element, UnicodeToLetter, LaTeX, and Text for interactive text and geometry display, suitable for middle school and above students learning parallel lines and geometric constructions.

GeoGebra Commands & Parameters

  1. Element(questionList, questionListIndex) → questionNum
  2. UnicodeToLetter(10003) → cmark
  3. UnicodeToLetter(10007) → xmark
  4. Element(A2:A5, questionNum) → A
  5. Element(B2:B5, questionNum) → B
  6. LaTeX("y=-\dfrac{4}{5}x+9") → C2
  7. LaTeX("4x+5y=4") → D2
  8. LaTeX("y=\dfrac{4}{5}x+3") → E2
  9. LaTeX("-4x+5y=7") → F2
  10. LaTeX("y=\dfrac{1}{3}x+8") → E3
  11. LaTeX("3x-9y=2") → F3
  12. LaTeX("3x+9y=1") → D3
  13. LaTeX("y=\dfrac{2}{3}x-2") → C4
  14. LaTeX("y=-\dfrac{2}{3}x+3") → E4
  15. LaTeX("12x-18y=7") → D4
  16. LaTeX("-2x-3y=-5") → F4
  17. LaTeX("y=-\dfrac{1}{2}x-7") → C5
  18. LaTeX("y=\dfrac{1}{2}x+10") → E5
  19. LaTeX("7x+14y=3") → D5
  20. LaTeX("3x-6y=-12") → F5
  21. Element(C2:C5, questionNum) → correctRightText
  22. Element(D2:D5, questionNum) → correctLeftText
  23. Element(E2:E5, questionNum) → incorrectRightText
  24. Element(F2:F5, questionNum) → incorrectLeftText
  25. LaTeX("y=-\dfrac{1}{3}x+3") → C3
  26. Text(If[isLeftCorrect, correctLeftText, incorrectLeftText], puzzleAnchor + (2.5, 4), true, true) → matchedLeftText
  27. Text(If[isRightCorrect, correctRightText, incorrectRightText], puzzleAnchor + (8.7, 7.7), true, true) → matchedRightText
  28. LaTeX("-\dfrac{4}{5}") → G2
  29. LaTeX("-\dfrac{1}{3}") → G3
  30. LaTeX("\dfrac{2}{3}") → G4
  31. LaTeX("-\dfrac{1}{2}") → G5
  32. Element(G2:G5, questionNum) → slope
  33. LaTeX("\text{Line \(A\)") → questionText
  34. LaTeX((((("\text{\textbf{Question: }Line \(A\) passes through \(" * A) * "\) and \(") * B) * "\). Which lines are parallel to Line \(A\)?\\\textbf{Instructions: }Complete the puzzle by clicking on puzzle pieces that contain lines parallel\\to Line \(A\).}")) → TEXT