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GeoGebra
GeoGebra Classroom
Outline
Angles in a Circle
angle proportional to arc
angles at circumference
concyclic points
tangents
proof and explanation
equidistance
exercise
links
Angles in a Circle
Author:
Lyne Cyr
,
Arthur Lee
This is a series of applets for exploring properties of angles in a 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
two arcs
sliding secant lines
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
Spherical dodecahedron/icosahedron
seo tool
Vectors and Components
Here comes the sun!
רישום חופשי
Discover Resources
Kowhaiwhai worksheet 4
Part A: Question 1-Triangle (Joseph)
Lopez_G2_Translation
Obtuse angles and the unit circle.
Discover Topics
Similarity Transformation or Similarity
Cylinder
Centroid or Barycenter
Normal Distribution
Natural Numbers
