document.write( "Question 1065081: ABC is an isosceles triangle. Its two sides AB and AC are equal to one another. It’s BAC = 20 degree. The baseline BC is extended upto D. Of how many degrees is the angle ACD? \n" ); document.write( "

Algebra.Com's Answer #680211 by ikleyn(52810) $\"\"$ $\"About$

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document.write( "ACD is the exterior angle.\r\n" );
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document.write( "It is supplementary angle to the angle ACB.\r\n" );
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document.write( "Angle ACB is  = 80 degrees.\r\n" );
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document.write( "Hence, angle ACD is 180-80 = 100 degrees.\r\n" );
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