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This is a true or false question......."If an exterior angle of a polygon maesures 20 degrees, then the polygon has 18 sides." ..... True or False??????

SoccerGirl

by SoccerGirl at May 18, 2010

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true: proof (n-2)180----- 18-2)180=2880/18=160 so each interior angle equals160 dgrees to you do 180-160=20 and 20=20 TRUE

COWGIRL COWGIRL May 18, 2010

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False unless it is given that the polygon is regular.  An irregular polygon would not have the same exterior angles even though they always add to 360 that does not make all of the 20 degrees. 

Jeremy.holder Jeremy.holder May 19, 2010

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False...

BigCatz BigCatz May 24, 2010

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true

ellie033 ellie033 May 27, 2010

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true

gibby. gibby. May 27, 2010

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