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3.1 Duplicating Segments and Angles

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Jess Brooks

on 5 November 2015

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Transcript of 3.1 Duplicating Segments and Angles

3.1 Duplicating Segments and Angles
Sketching vs. Drawing vs. Constructing
Copying a Line Segment
Start with a line segment with the endpoints labeled A and B
Using a straightedge make a longer ray
Using your compass measure the length of AB
Bring your compass to the ray and mark
Copying an Angle
First draw a ray
Now center your compass at the vertex of the angle and create an arc
Copy that arc to the ray
Using your compass measure the "openness" of the angle
Copy that to the arc you drew on the ray
Connect the endpoint of the ray to the intersection of the two arcs.
Video Review
p. 145 1-10
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