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GeoGebra
Triangle Trig Intro
Author:
DrawingOnMath
Compute the ratio of a pair of sides for many different angles. What do you observe?
New Resources
Nagel Point
Length vs. Time 2.0
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Discover GeoGebra
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Torque on particle
Circumcenter
Isosceles Triangle
比較數量應用題：四年級有學生多少人？
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