155x Filetype PPT File size 1.92 MB Source: www.marsd.org
Geometry Geometry Geometry Geometry 1.2: Use Segments and Congruence 1.2: Use Segments and Congruence Vocabulary •Postulate (Axiom): a rule in geometry that is accepted without proof. •Theorem: a rule that can be proved. Ruler Postulate •The distance between two points A and B, written as AB, is the absolute value of the difference of the coordinates A and B. Segment Addition Postulate •If B is between A and C, then AB + BC = AC. Examples 1) Find the length of AC AC = AB + BC AC = 5 +14 AC =19 2) Find the length of BC BC = AC – AB BC = 38 – 17 BC = 21
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