document.write( "Question 161599: This is a worksheet and we have no book so will you please help.
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document.write( "In triangle XYZ, XY=~YZ. If m angleX=52, find m angle Y. We have to show our work.\r
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document.write( "Thanks \n" );
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Algebra.Com's Answer #119121 by gonzo(654)![]() ![]() ![]() You can put this solution on YOUR website! triangle xyz \n" ); document.write( "xy = yz \n" ); document.write( "angle x = 52 degrees. \n" ); document.write( "draw triangle with x on the left, y on top, z on the right. \n" ); document.write( "xy is line going up from left to right. \n" ); document.write( "yz is line going down from left to right. \n" ); document.write( "angle x is the angle in the left hand corner of the triangle. \n" ); document.write( "this is an isosceles triangle because 2 sides are equal (congruent). \n" ); document.write( "in an isosceles triangle the base angles are equal. \n" ); document.write( "these are the angles opposite the equal sides. \n" ); document.write( "angle x is opposite yz \n" ); document.write( "angle z is opposite xy \n" ); document.write( "angle z is therefore equal to angle x is equal to 52 degrees. \n" ); document.write( "since the sum of the interior angles of a triangle is always 180, then angle y must be equal to 180 - angle x - angle z. \n" ); document.write( "this becomes angle y = 180 - 2*52 = 180 - 104 = 76. \n" ); document.write( "angle y must be 76 degrees. \n" ); document.write( "to prove add all 3 angles of the triangle and they must equal 180 degrees. \n" ); document.write( "52 + 52 + 76 = 180. \n" ); document.write( "----- \n" ); document.write( "angle y is 76 degrees. \n" ); document.write( " \n" ); document.write( " |