三角形面积计算演示

GeoGebra 命令及参数

1. Element(G4, caseNum) → A4
2. Element(G3, caseNum) → A3
3. Area(Polygon[{A3, A4, A5}]) → answer
4. Polygon({DataListFrameAnchor, DataListFrameAnchor + (12 * u), DataListFrameAnchor + (12 * u) - vHeight, DataListFrameAnchor - vHeight}) → ValueFrameTemplate
5. Length(dTypes) → numSteps
6. Sequence(Translate[ValueFrameTemplate, Vector[(-((vHeight * i)))]], i, 0, numSteps - 1) → ValueFrames
7. Sequence((-10, -22) + ((3.5 * i) * u), i, 0, 14) → iconAnchors
8. Sequence(Polygon[Element[iconAnchors, i], Element[iconAnchors, i + 1], 4], i, 1, (2 * Length[iconAnchors]), 2) → iconFrames
9. Polygon({(left, bottom), (left, top), (right, top), (right, bottom)}) → viewbox
10. Polygon({ToolAnchor - (2 * v) - u, ToolAnchor + (5 * v) - u, ToolAnchor + (5 * v) + ((2.3 + (Length[iconAnchors] * 3)) * u), ToolAnchor - (2 * v) + ((2.3 + (Length[iconAnchors] * 3)) * u)}) → toolBar
11. UnitVector(Vector[A3, A4]) → uAB
12. Element(iconFrames, currentAction) → iconHighlighter
13. Element(ValueFrames, 1) → vFrame1
14. Element(ValueFrames, 2) → vFrame2
15. Element(ValueFrames, 3) → vFrame3
16. Element(ValueFrames, 4) → vFrame4
17. Element(ValueFrames, 5) → vFrame5
18. Element(ValueFrames, 6) → vFrame6
19. Element(ValueFrames, 7) → vFrame7
20. Zip(Element[ValueFrames, A], A, selectedList) → highlightedItems
21. TableText({dDisplay}, "vc") → valueTbl
22. TableText({Join[{{"\phantom{find the equation of a line through (-1,-3) with slope -5}"}, dSteps}]}, "vr") → stepsTable
23. LaTeX((((("\text{\textbf{Question: }" * QUESTION) * "\\\textbf{Instructions: }") * INSTRUCTIONS) * "}")) → allInstruc
24. Polygon({A3, A4, A5}) → D3
25. Element(ValueFrames, 8) → vFrame8
26. Element(ValueFrames, 9) → vFrame9
27. Element(ValueFrames, 10) → vFrame10