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Straightedge and compassGeometric figures, such as angles, can be constructed using straightedge and compass. In this case, measuring instruments such as protractor and ruler are not permitted A ruler can be used if and only if its markings are not used. Below, find a variety of important construction in geometry: Bisecting and copying angles: Bisecting an angle Learn how to bisect an angle. Nice and fully illustrated demonstrations. Copying an angle Learn how to copy any angle with ease using step by step guidelines. Constructing perpendiculars and midpoint of a segment: Constructing perpendiculars Learn how construct a line perpendicular to another line through a point on the line or not on line. Constructing the midpoint of a segment Learn how use only a ruler and a compass to get the midpoint of a segment Constructing triangles: Constructing an equilateral triangle Learn how construct an equilateral triangle given the length of any segment. Constructing an isosceles triangle Learn how construct an isosceles triangle given the length of any segment.
Fun math game: Destroy numbered balls by adding to 10
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| Homepage|Straightedge and compass |
|Copying an angle
|Bisecting an angle
|Constructing perpendiculars|
Constructing an equilateral triangle|
Constructing the midpoint of a segment|
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