勾股定理圆的新定理
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①本范例演示了勾股定理圆中的新定理及其几何性质;②涉及核心数学概念包括勾股定理、圆、面积、几何变换等;③作图要点使用了Circle, Point, Line, Intersect, Segment, Rotate, Angle, Midpoint, Area, PointIn, Circumference, OrthogonalLine等GeoGebra命令和对象;④适合高中及以上数学学习者和几何爱好者使用。
GeoGebra 命令及参数
Circle(A, a) → cPoint(c) → CLine(C, A) → fIntersect(c, f, 2) → DPoint(c) → BSegment(B, C) → gPoint(f) → ERotate(E, 90°, C) → E'Point(f) → FSegment(B, D) → hAngle(D, B, C) → αMidpoint(D, B) → GMidpoint(B, C) → HCircle(G, B) → dCircle(H, C) → eArea(d) → bPointIn(d) → Pointd_1Area(e) → iPointIn(e) → Pointe_1Area(c) → jPointIn(c) → Pointc_1Circumference(d) → circumferencedPointIn(d) → PointdCircumference(e) → circumferenceePointIn(e) → PointeCircumference(c) → circumferencecPointIn(c) → PointcIntersect(d, e, 2) → IOrthogonalLine(B, f) → kAngle(B, I, D) → β