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GeoGebra
GeoGebra Classroom
Outline
circle geometry
angle proportional to arc
angles at circumference
concyclic points
tangents
proof and explanation
equidistance
exercise
links
circle geometry
Author:
Mikael Asp
,
Arthur Lee
Topic:
Circle
,
Geometry
This is a series of applets for exploring properties of angles in circle.
Table of Contents
angle proportional to arc
Angle at Center
Angle at Center with spreadsheets
Arc and Angle
eyeball model
Spotlight
compare angles and arcs
angles at circumference
Angle at circumference
angle at center and circumference
Equal angles in circle; various theorems
concyclic points
mark equal angles
vary and mark an angle
drag and trace an angle
drag and trace an angle with color
make 4 points concyclic
tangents
exploring tangent-chord angle
studying tangent-chord angles
tangent chord angles
proof and explanation
explain difference in angles with circle
angle at center and circumference proof
equidistance
equidistant from 2 points
equidistant from 3 points
task: circumcenter
exercise
Annulus
circles
maximize an angle
maximum angle explained
task: angle and chord
task: rectangle length
task: chord midpoint
task: make center
task: make right angle
task: make an angle
links
seeing tangent and chord from an alternate angle
Circle Geometry resources in gMath
Next
Angle at Center
New Resources
Bottema's Theorem
Slope of a Straight Line: Run and Rise
Simplifying Radicals: Geometric Thin Slice
Napoleon's Theorem
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Discover Resources
A parallelogram
parallel lines hold equal chords
R-formula
two-way table for unusual dice
Multiplying Mosquitoes
Discover Topics
Mode
Parallelogram
Real Numbers
Reflection
Equations