## InterA.ConstructSegmentCopy History

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Resource updated: 04 September 2008

Resource updated: 25 May 2009

[]in progress

[]You can download everything; a zip is in progress ...

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Last updated:04 September 2008

Resource updated: 04 September 2008

(That is, the lengths of the segments are equal).

(Congruent: the lengths of the segments are equal).

In the drawing space below, construct a line segment and a line and then copy the line segment onto the line.

Go for it! Construct a line segment and a line and then copy the line segment onto the line.

In the drawing space below, construct a line segment and a line and then copy the line segment onto the line.

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[ width=110px] **Metadata**

[ width=110px] Global

[]Standard5MG.2.1, 7MG.3.1, GEO.16.0

[]Standards

Copy a line segment. done:03 September 2008

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[ width=110px] **Metadata**

[] Compass and Straightedge Constructions with GeoGebra

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[]Brief

[]Construction #1: Copy a line segment (onto a line)

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[]Grade

[]5th-Geometry

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[]Strand

[]Measurement and Geometry, Geometry

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[]Standard5MG.2.1, 7MG.3.1, GEO.16.0

[]CA 5.MG.2.7 - CA 7.MG.3.1 - CA Geometry 16.0

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[]Keywords

[]construction, straightedge, compass, ruler, geogebra, geometry, segment, copy

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[]Comments

[]none

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[]Download

[]in progress

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[]Author

[]LFS - contact

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[]Type

[]Freeware - Available for Offline and Online Use - Translatable (html)

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[]Use

[]Requires sunJava player

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Last updated:04 September 2008

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Mathcast: See & Do

Mathcast: See & Do

Reference: http://www.mathopenref.com/constcopysegment.html%%

Reference: http://www.mathopenref.com/constcopysegment.html

[c]

[c]

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[ colspan=3]Do the givens.

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[c]Attach:GgbActivity/segment.jpg Δ

[]Draw line segment by clicking twice in drawing pad.

[]Point A

Point B
`a=Segment[A,B]`

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[ colspan=3]Labeling: Use right-click to hide/show labels on endpoints and segment.

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[c]Attach:GgbActivity/line.jpg Δ

[]Draw line segment by clicking twice in drawing pad.

[]Point C

Point D
`b=Line[C,D]`

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[ colspan=3]Labeling: Use right-click to rename C -> P and to hide point D.

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[ colspan=3]Copy the segment.

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[c]Attach:GgbActivity/compass.jpg Δ

[]Draw circle with center P and radius the segment by clicking on points P, A and B.

[]`Circle c=Circle[P, Segment[A, B]`

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[c]Attach:GgbActivity/intersect.jpg Δ

[]Draw point C by clicking on 2nd intersection point of circle and line.

[]`C=Intersect[c, b, 2]`

.

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[c]Attach:GgbActivity/line.jpg Δ

[]Draw line segment by clicking on points P and C.

[]`d=Segment[P,C]`

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[ colspan=3]Labeling: Use right-click to hide/show labels on segment.

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[ colspan=3]Check construction.

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[c]Attach:GgbActivity/move.jpg Δ

[]Click and drag endpoints of first line segment to change its length.

[]Copied line segment should match changes.

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[ colspan=3]Save construction. Command: File -> Save.

[ colspan=3]Labeling: Use right-click to rename C -> P and hide point D.

[ colspan=3]Labeling: Use right-click to rename C -> P and to hide point D.

[]Draw line segment by clicking twice in drawing pad.

[]Draw line segment by clicking on points P and C.

[]Click and drag endpoints of first line segment.

[]Click and drag endpoints of first line segment to change its length.

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[ colspan=3]Save construction. Command: File -> Save.

[ valign=middle width=40%]

[c valign=middle width=40%]

[]Point A

Point B
`a=Segment[A,B]`

[]Point A

Point B
`a=Segment[A,B]`

[]Point C

Point D
`b=Line[C,D]`

[]Point C

Point D
`b=Line[C,D]`

[]`Circle c=Circle[P, Segment[A, B]`

[]`Circle c=Circle[P, Segment[A, B]`

[]`C=Intersect[c, b, 2]`

.

[]`C=Intersect[c, b, 2]`

.

[]`d=Segment[P,C]`

[]`d=Segment[P,C]`

a=Segment`[A,B]`

`a=Segment[A,B]`

b=Line[C,D]

`b=Line[C,D]`

[]Circle c=Circle[P, Segment[A, B]

[]`Circle c=Circle[P, Segment[A, B]`

[]C=Intersect[c, b, 2].

[]`C=Intersect[c, b, 2]`

.

[]d=Segment[P,C]

[]`d=Segment[P,C]`

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[ ]Copy a line segment. done:03 September 2008

[]

(That is, the lengths of the segments are equal).

Mathcast: See & Do

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[ valign=middle width=40%]

Mathcast: See & Do

[c]

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[ colspan=2]

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[table border=1 cellpadding=3

[table border=1 cellpadding=3 width=810]

a=Segment[A,B]

a=Segment`[A,B]`

Copy a line segment. done:03 September 2008