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GeoGebra Lesson
Outline
S4 Circle Theorems
S.5 Ch.10 Equal Angles, Equal Arcs, Equal Chords
S.5 Ch.10 Arcs proportional to angles centre
Arcs Proportional to Angles at the Centre(弧長與圓心角成比例)
Radius perpendicular to chord
Chord perpendicular to radius
Equidistant chord of a circle are equidistant from the cente
Angle at Centre & Angle at Circumference: Proof 圓心角與圓周角：証明
Angles in the same Segment (Proof)
Angle in a Semi-circle 2
Angle at semi circle
opposite angles, cyclic quadrilateral
Exterior angles of cyclic quadrilateral
Testing Concyclic
make 4 points concyclic
Tangent perpendicular to radius
Tangent Properties
Alternate Segment Theorem
Converse of angle in alternate segment
Intersecting Circles
Power of a Point
The Secant Theorem
4 centers of triangles and euler line
S4 Circle Theorems
Author:
tkyggb
Circle Theorems
S.5 Ch.10 Equal Angles, Equal Arcs, Equal Chords
S.5 Ch.10 Arcs proportional to angles centre
Arcs Proportional to Angles at the Centre(弧長與圓心角成比例)
Radius perpendicular to chord
Chord perpendicular to radius
Equidistant chord of a circle are equidistant from the cente
Angle at Centre & Angle at Circumference: Proof 圓心角與圓周角：証明
Angles in the same Segment (Proof)
Angle in a Semi-circle 2
Angle at semi circle
opposite angles, cyclic quadrilateral
Exterior angles of cyclic quadrilateral
Testing Concyclic
make 4 points concyclic
Tangent perpendicular to radius
Tangent Properties
Alternate Segment Theorem
Converse of angle in alternate segment
Intersecting Circles
Power of a Point
The Secant Theorem
4 centers of triangles and euler line
Next
S.5 Ch.10 Equal Angles, Equal Arcs, Equal Chords
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