Solutions to Selected Exercises
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Draw a circle with any center Band any radius r. Choose a point Aon the circle. Draw a circle with center Aof radius r. Both circles intersect at C. With Cas the center draw an arc on circle Bto obtain the point D. With Das the center draw an arc to obtain the point E. The points A,B,Eare collinear.
KeywordsIdeal Point Cross Ratio Unique Line Polygonal Line Augmented Line
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