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Showing posts with label geo constructions. Show all posts
Showing posts with label geo constructions. Show all posts

Friday, May 25, 2012

Math 6H (Periods 1, 2, & 3)

 Geometric Constructions  4-8

There is a difference between making a drawing and a geometric construction.
For drawings, we measure segments & angles using a ruler and a protractor to create our shapes or angles.
With geometric constructions, however, we only use a compass and a straight edge. Although we may use the ruler as our straight edge, we ignore the markings.
Construction 1: Bisect a Segment which also creates a 90 degree angle
Construction 2:  Bisect an angle
Construction 3: Construct a 60 degree angle
Construction 4:  Construct an angle congruent to a given angle.