document.write( "Question 1067337: AB, BC and CD are three sides of a regular polygon , angle ABC= 144°, AB and CD are produced to meet at E. Find the number of sides of the polygon and angle BAC ? \n" ); document.write( "

Algebra.Com's Answer #682540 by ikleyn(52794) $\"\"$ $\"About$

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\n" ); document.write( "Answer. 10-sided regular polygon (decagon).\r
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\n" ); document.write( "\n" ); document.write( "Notice. The part of the condition \"AB and CD are produced to meet at E.\" is unnecessary, excessive, and is not used in the solution.\r
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\n" ); document.write( "\n" ); document.write( "This part is IRRELEVANT to the solution (and to the condition, too).\r
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