"Impossible" Geometric Constructions

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Three geometric construction problems from antiquity puzzled mathematicians for centuries:
1. The trisection of an angle (dividing a given angle into three equal angles).
2. Squaring the circle (constructing a square with the same area as a given circle).
3. Duplicating the cube (constructing a cube with twice the volume of a given cube).
Are these constructions impossible?
Click here to know...
Impossible Geometrical Constructions

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