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GeoGebra
Circle Theorems and other geometry
Circle Theorems
van Schooten's theorem
Pythagoras drawing for proof
Paper Folding
Circle Theorems and other geometry
Author:
ray.c.carpenter
Topic:
Circle
,
Geometry
Table of Contents
Circle Theorems
Angle at centre and circumference
Angle in semicircle
Angles in the same segment
Opposite angles in a cyclic quadrilateral
Tangents from a point
Angle between tangent and radius
Alternate segment
Perpendicular from centre to chord
van Schooten's theorem
van Schooten's theorem start point
van Schooten's theorem extended diagram for proof
Pythagoras drawing for proof
Static Pythagoras drawing for proof
Dynamic Pythagoras drawing for proof
Paper Folding
Equilateral triangle from a rectangle - diagram 1a
Equilateral triangle from a rectangle - diagram 1b
Alternative equilateral triangle diagram 2a
Alternative equilateral triangle diagram 2b
Equilateral triangle from a circle
Related Topics
Angles
Congruence
Conic Sections
Constructions
Coordinates
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