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1.1e – Constructing Segments & Lines. At the end of this lesson you will be able to: construct midpoints, congruent segments, and parallel lines.
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1.1e – Constructing Segments & Lines At the end of this lesson you will be able to: construct midpoints, congruent segments, and parallel lines G-CO.12 Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric software, etc.). Copying a segment; bisecting a segment; constructing perpendicular lines, including the perpendicular bisector of a line segment; and constructing a line parallel to a given line through a point not on the line.
Congruent Segments Segments that have the same length. EF means the distance from E to F HG means the distance from H to G EF = HG This statement reads: The distance from E to F is equal to the distance from H to G The red tick marks are used to show congruent segments
Congruent Segments and represent a geometric figure Segments that have the same length. The above statement reads: Segments EF is CONGRUENT to segment HG Notice the difference in Notation: EF = HG
Construction:A way of creating a figure that is more precise Examples of tools used to make constructions: • Ruler • Compass • Straightedge (ruler) • Protractor • Dynamic software • Etc.