Yahoo Answers: Answers and Comments for A better understanding of Geometric Proofs and Theorems.? [Homework Help]
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From Anonymous
enUS
Fri, 16 Jan 2009 13:50:29 +0000
3
Yahoo Answers: Answers and Comments for A better understanding of Geometric Proofs and Theorems.? [Homework Help]
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https://answers.yahoo.com/question/index?qid=20090116135029AAmjOqa
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From eda: If you have an inequality, you can always add ...
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https://answers.yahoo.com/question/index?qid=20090116135029AAmjOqa
Sun, 29 May 2016 02:21:58 +0000
If you have an inequality, you can always add any term to both sides and keep the inequality. In this case, 4ab is what is necessary to be added to change (ab)^2 into (a+b)^2.

From aconite66: Hahah everyone hates proofs...
Alright the ...
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https://answers.yahoo.com/question/index?qid=20090116135029AAmjOqa
Fri, 16 Jan 2009 14:26:53 +0000
Hahah everyone hates proofs...
Alright the first thing you have to write is what you're given
Given:
(Shape) ABCD, Angle of __ = Angle of __, ect... (whatever it gives you)
Then what you're trying to prove
Prove: __
Now depending on the type of proof they're solved differently.. but i'll assume you're talking about (paragraph/ table) proofs.
Always start body with "It is given that___(restate your givens)__"
Next figure simply use mathematical theorems to prove what you're attempting to prove. With the shapes that you've mentioned the things you're going to need to look for are CONGRUENT/ SIMILAR TRIANGLES, AND PARALLEL LINES.
This is incredibly hard to show you without a diagram, but here's a great proof that should help you.
http://www.algebra.com/algebra/homework/Parallelograms/Oppositesidesofaparallelogramareequal.lesson
Just remember that if triangles are congruent then they all sides are equal.
Corresponding Parts of Congruent Triangles are Equal (CPCTE theorem)
remember ASA AAS SSS and SAA all make the triangles congruent.
SSA and AAA do NOT necessarily make triangles similar
Alternate interior, Corresponding, Alternate exterior, angles are equal when a transversal intersects two pairs of parallel lines.
Verticle angles are equal
Reflexive property of equality
Substitution
Distributive property of equality
and know the definitions of parallelograms quadrilaterals triangles squares rhombuses and rectangles.
Knowing just those you can solve virtually any geometric proof. sorry i can't really go into more detail it's hard to be so general (every proof is different) if you'd like to post an example I'd happily help you solve it. =D
Well hope this helps.. Good luck with geometry!!