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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
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
【案例】2018年全国1卷理科12题
異分母分數減法
三位數除以一位數（一）
Discover Resources
sine graph (reduce to 1/2 and then translate leftward by 15 degree)
上下
(001)80102史巧薇
動畫初階練習1(平移)
正方体展开图的副本
Discover Topics
Upper and Lower Sum or Riemann Sum
Linear Regression
Poisson Distribution
Diagrams
Parametric Curves
