2.2 作等边三角形

Author:郑凯耀, Tim Brzezinski

The applet below dynamically illustrates how an equilateral triangle can be constructed via compass and straightedge. Why is this method of construction valid?

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အခြေခံ data အခေါ်အဝေါ်များ
רישום חופשי
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दुई-ओटा समुहको संयोजन (Union of two sets)
Involute of the Circle

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Series of Transformations
AreaProblem
Snake
the numbers thing with arcs
Kepl2

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Surface
General Quadrilateral
Symmetry
Logarithmic Functions
Scalene Triangles