document.write( "Question 732347: AC =~ DC and BC =~ CE. Prove Triangle ABC =~ to Triangle DEC.
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Algebra.Com's Answer #447804 by ohtheirony(35) $\"\"$ $\"About$

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1) Given
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\n" ); document.write( "*Vertical angles are angles across from each other when two lines intersect. Vertical angles are always congruent. ACB and DEC are a pair of vertical angles, and BCD and ACE are a pair of vertical angles.
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\n" ); document.write( "**Side-Angle-Side (SAS) is a congruence shortcut for triangles. When two pairs of congruent sides an one pair of congruent angles (between the sides) are in two triangles, we can assume the triangles are congruent. Scan through this PDF to learn more about congruence shortcuts: http://www.palisadessd.org/cms/lib03/PA01000106/Centricity/Domain/225/Ch_4_Triangle_Congruence_Shortcut_Investigation_Key.pdf \n" ); document.write( "

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