SOLUTION: If a quadrilateral has at least one right angle, then it is a rectangle

Algebra ->  Algebra  -> Geometry-proofs -> SOLUTION: If a quadrilateral has at least one right angle, then it is a rectangle      Log On

Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 234105: If a quadrilateral has at least one right angle, then it is a rectangle
Answer by Alan3354(31514) About Me  (Show Source):
You can put this solution on YOUR website!
If a quadrilateral has at least one right angle, then it is a rectangle
-----------
False. The angles can be, for example, 90, 80, 80, 110 degrees.
1 counter example is sufficient to disprove.