How to copy an obtuse angle with a compass
- how to copy an angle in geometry
- how do i copy an angle
- how to copy an angle
How to copy an angle using a compass.
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A construction associated with "copying an angle" requires that you have a "place" to begin your copy.
It is customary to draw a straight line upon which you then produce your copy.
How to bisect an angle with a compass
Such a line is called a "reference line".
| This construction may also be known as "Constructing a Congruent Angle", |
Given:∠ABC
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STEPS:
1. Using a straightedge, draw a reference line, if one is not provided.
2. Place a dot (starting point) on the reference line.
3. Place the point of the compass on the vertex of the given angle, ∠ABC (vertex at point B).
4.
Stretch the compass to any length that will stay "on" the angle.
5. Swing an arc so the pencil will cross BOTH sides (rays) of the angle.
6.Without changing the size of the compass, place the compass point on the starting point (dot) on the reference line and swing an arc that will intersect the reference l