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Geometry
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Demonstrations 2121 - 2140 of 2607
Lindgren's Square-to-Dodecagon DissectionBusschop's Hexagon-to-Square DissectionBrodie's Pentagon-to-Square DissectionDudeney's Cross-to-Isosceles-Right-Triangle DissectionThe Three-Chord Lemma
Lindgren's Square-to-Dodecagon Dissection
Busschop's Hexagon-to-Square Dissection
Brodie's Pentagon-to-Square Dissection
Dudeney's Cross-to-Isosceles-Right-Triangle Dissection
The Three-Chord Lemma
A Product of Chord Lengths in a CircleThe Chordal TheoremSecant Intersection with Two Internally Tangent CirclesHow the Altitude Divides the HypotenuseUnfolding Polyhedron Nets
A Product of Chord Lengths in a Circle
The Chordal Theorem
Secant Intersection with Two Internally Tangent Circles
How the Altitude Divides the Hypotenuse
Unfolding Polyhedron Nets
Frenet FrameDividing a Right Triangle by the Altitude to the HypotenuseSix-Piece Dissection of a Tetrahedron into Its Mirror ImageDissection of a Triangle to Its Mirror Image IIDissection of a Triangle to Its Mirror Image I
Frenet Frame
Dividing a Right Triangle by the Altitude to the Hypotenuse
Six-Piece Dissection of a Tetrahedron into Its Mirror Image
Dissection of a Triangle to Its Mirror Image II
Dissection of a Triangle to Its Mirror Image I
Lindgren's Two-Triangles-to-One DissectionQuadrilateral SlideBradley's Two-Triangles-to-One DissectionThe Area of a Triangle as Half a RectangleInscribed Angles That Intercept the Same Arc
Lindgren's Two-Triangles-to-One Dissection
Quadrilateral Slide
Bradley's Two-Triangles-to-One Dissection
The Area of a Triangle as Half a Rectangle
Inscribed Angles That Intercept the Same Arc

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