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 Post subject: Geometry VI Pg 70 Problem Number 40Posted: Tue Mar 30, 2010 10:12 pm

Joined: Tue Mar 02, 2010 9:40 pm
Posts: 4
Why is C not the answer? if C, D are 90 degree then don't we know that a,b also 90?

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 Post subject: Re: Geometry VI Pg 70 Problem Number 40Posted: Wed Mar 31, 2010 4:38 pm

Joined: Thu Feb 12, 2009 6:32 pm
Posts: 497
c and d are each 90 degrees, but, with (1) and (2) we know nothing of a and b. They could each be 90 degrees, but need not be.

Veritas Help

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 Post subject: Re: Geometry VI Pg 70 Problem Number 40Posted: Fri Jun 03, 2011 3:15 pm

Joined: Fri Jun 03, 2011 2:52 pm
Posts: 3
VP_Help - can you show me an example where c and d are both 90 degrees and a and b aren't? I guess I don't understand how you cannot come to the conclusion that a and b must be 90 degrees each.

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 Post subject: Re: Geometry VI Pg 70 Problem Number 40Posted: Sat Jun 04, 2011 9:12 am

Joined: Thu Feb 12, 2009 6:32 pm
Posts: 497
This could occur if opposite sides of the quadrilateral were not equal.

- Veritas Help

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