document.write( "Question 1043417: If the base of an isosceles triangle is produced on both sides, prove that the exterior angles so formed are equal to each.\r
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Algebra.Com's Answer #658581 by MathTherapy(10556)\"\" \"About 
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\n" ); document.write( "If the base of an isosceles triangle is produced on both sides, prove that the exterior angles so formed are equal to each.
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An exterior angle formed by extending a side of a triangle is equal to the sum of its INTERIOR OPPOSITE angles. \n" );
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