四边形探究:对角线相等的四边形性质
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所属专题
Congruence (CO) Cluster
Congruence (Vol 2)
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
Gail LeBlancCCSS High School: Geometry (Congruence) Volume 2
CCSS High School: Geometry (Congruence) Volume 2
Quadrilaterals
①本范例演示当四边形具有两组对角相等时,其几何性质的变化;②涉及核心数学概念包括四边形、对角线、平行线、角度关系等;③作图要点运用了 Rotate(旋转)、Angle(角度)、Ray(射线)、Slope(斜率)、PointIn(点在线上)、Point(点)、Line(线)、Intersect(交点)、Segment(线段)、Polygon(多边形)等 GeoGebra 命令与对象;④适合高中数学学生用于探究平行四边形及特殊四边形的判定与性质,加深对几何变换的理解。
GeoGebra 命令及参数
Rotate(A_1, α, A) → A'Angle(A_1, A, A') → βRay(A, A_1) → aRay(A, A') → bSlope(a) → cPointIn(e) → CPoint(a) → DLine(A, C) → fRay(C, D) → hRotate(D, (-α), C) → D'Angle(D', C, D) → γRay(C, D') → iIntersect(b, i) → BAngle(A, B, C) → δAngle(C, D, A) → εSegment(C, D) → jSegment(C, B) → kSegment(B, A) → lSegment(A, D) → mSlope(k) → m_1Slope(l) → m_2Slope(j) → m_3Slope(m) → m_4Polygon(A, D, C, B) → poly1, b_1, d_1, c_1, e_1