概要
Circles
目次
Proving All Circles Similar
Circle Theorems
- Circle Terminology
- Circle Terminology (V2)
- What is a Tangent?
- Circle Tangent-Types Illustrator
- Properties of Tangents Drawn to Circles (A)
- Properties of Tangents Drawn to Circles (B)
- Animation 3
- Constructing Tangents: Ex. 12
- Tangents to Circles: Investigation
- Open Middle: Circle Tangent to Line (1)
- Position the Line Tangent to the Circle
- Where to Sit? (I)
- Where to Sit (II)?
- Inscribed Angle Theorem (V1)
- Animation 12
- Inscribed Angle Theorem: Take 2!
- Inscribed Angle Theorems: Take 3!
- Inscribed Angle Theorem: Take 4!
- Inscribed Angles Investigation (Revamped)
- Proof Exercise: Inscribed Angle Theorem (Case 1)
- Proof Exercise: Inscribed Angle Theorem (Case 2)
- Proof Exercise: Inscribed Angle Theorem (Case 3)
- Inscribed Angle Theorems: Take 4!
- Inscribed Angle Theorem: Corollary 1
- Inscribed Angle Theorem Dance: Take 2!
- Animation 20 (Inscribed Angle Dance!)
- Find that Angle! (GoGeometry Action 144)
- Thales' Theorem (VA)
- Animation 116
- Thales' Theorem (VB)
- Animation 54
- Angle Formed by Chord & Tangent (I)
- Animation 50
- Angle Formed by Chord & Tangent (II)
- Animation 78
- Congruent Chords: Quick Investigation
- Congruent Chords (I)
- Animation 76
- Diameters & Chords I (VA)
- Diameters & Chords I (VB)
- Animation 24
- Congruent Chords Action (A)
- Animation 96
- Equidistant Chord Action
- Animation 101
- Angle Formed by 2 Chords (I)
- Animation 32
- Angle Formed by 2 Chords (II)
- Animation 33
- Angles from Secants and Tangents (V1)
- Animation 61
- Angle From 2 Secants (V2)
- Animation 45
- Crossing Chords: Proof Hint
- Animation 79
- Crossing Chords Property & Proof Start
- Crossing Chords Property & Proof Start (II)
- Secants: Proof Hint
- Animation 88
- Animation 92
Inscribing + Circumscribing Circles; Cyclic Quads
- Circumcircle: Construction Exercise (VA)
- Circumcircle: Construction Exercise (VB)
- Circumcircle: Construction Exercise (VC)
- Making Perpendicular Bisectors: Ex. 9
- Incircle: Construction Exercise (VA)
- Incircle: Construction Exercise (VB)
- Constructing Angle Bisectors: Ex. 11
- Cyclic Quadrilaterals (IAT: Corollary 3)
- Animation 43
- Cyclic Quadrilateral: Proof Hint
- Cyclic Quadrilateral: Quick Warm Up (GoGeometry Action 149!)
- Where in NYC? (VA)
- Where in NYC? (VB)
- Where in NYC? (VC)
Constructing Tangents to Circles
Arc Length, Sector Area, Radians
Other Geometry Resources