点斜式练习 by Jason Wofsey

GeoGebra 命令及参数

1. Line(D, E) → line1
2. Line(A, B) → originalLine
3. Line(C, originalLine) → parallelLine
4. RandomElement(list1) → b
5. KeepIf(x ≠ b, list1) → list3
6. RandomElement(list3) → d
7. KeepIf(x ≠ d, list3) → list5
8. RandomElement(list1) → a
9. KeepIf(x ≠ a, list1) → list2
10. RandomElement(list2) → c
11. Textfield() → InputY_1
12. Textfield() → InputM
13. Textfield() → InputX_1
14. SelectedElement(sign1List) → sign1
15. SelectedElement(sign2List) → sign2
16. Segment(Q, P) → g
17. SelectedIndex(sign1List) → indexSign1
18. SelectedIndex(sign2List) → indexSign2
19. Element(sign1ListA, indexSign1) → j
20. Element(sign1ListA, indexSign2) → k
21. RandomElement(list5) → f
22. Line(F, G) → line3
23. KeepIf(x ≠ c, list2) → list4
24. RandomElement(list4) → e
25. OrthogonalLine(C, originalLine) → perpendicularLine
26. Textfield() → InputSlope
27. Slope(perpendicularLine) → slopeAnswer
28. FractionText(slopeResponse) → slopeText
29. Point(g) → H
30. OrthogonalLine(H, g) → h
31. Point(g) → I
32. OrthogonalLine(I, g) → i
33. Point(h) → J
34. Line(J, g) → l
35. Intersect(i, l) → K
36. Polygon(H, I, K, J) → poly1, h_1, i_1, k_1, j_1