Chapter 1 Points, Lines, Planes and Angles
Chapter 1 Points, Lines, Planes and Angles
Chapter 1 Points, Lines, Planes and Angles
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How am I going to go from #1 to #7?Geo 9 Ch 1-2.2 21Now, lets try the reverse:Given:ACBDA B CDPr ove : ABCD(WARNING!)StatementsReasons1. AC BD1.*2. AC = BD (c<strong>and</strong>y bar) 2.3. AB + BC = AC; BC + CD = BD 3.(breaking into pieces)4. AB + BC = BC + CD 4.(why do I need to put this in?)4. BC = BC 5.*6. AB = CD 6.7. AB CD7.The pattern for adding is: ( Small to large )1) ______________________________2) ______________________________3) ______________________________The pattern for subtracting is: ( Large to small )1) ______________________________2) ______________________________3) ______________________________Use definition of congruence on either end of the proof if needed.Everything for Add= <strong>and</strong> Sub = must be in the equality sign!
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