Find the perimeter of the trapezoid with the dimensions below:\r
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document.write( "there is a picture but i cant draw it so here is an explaination.
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document.write( "slant height for both sides: 2
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document.write( "top width across: 3.5
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document.write( "bottom corner degrees on both sides: 60\r
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document.write( "*I DONT KNOW THE HEIGHT OR THE BOTTOM BASE.
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document.write( "Here's the picture:\r\n" );
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document.write( "Now let's draw in two perpendiculars from the two upper\r\n" );
document.write( "corners to the bottom base:\r\n" );
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document.write( "Now let's cut out the middle like this:\r\n" );
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document.write( "Now let's slide those two right triangles together, like this:\r\n" );
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document.write( "Now we see that because of those two 60° angles,\r\n" );
document.write( "that triangle is an equilateral triangle. So its\r\n" );
document.write( "bottom side is equal to its other two sides, making\r\n" );
document.write( "the bottom side 2 also. so the two halves of the\r\n" );
document.write( "bottom side of that triangle are 1 each, like this\r\n" );
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document.write( "Now slide them back apart:\r\n" );
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document.write( "Put the trapezoid back together like this:\r\n" );
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document.write( "Now we see that because the top base is 3.5, the\r\n" );
document.write( "distance between the green lines at the bottom is\r\n" );
document.write( "also 3.5:\r\n" );
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document.write( "Now to find the perimeter, all we have to do is add up all\r\n" );
document.write( "the pieces around the border of the trapezoid.\r\n" );
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document.write( "Bottom side = 1 + 3.5 + 1 = 5.5\r\n" );
document.write( "Right slant side = 2\r\n" );
document.write( "Top side = 3.5\r\n" );
document.write( "Left slant side = 2\r\n" );
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document.write( "So the perimeter is 5.5 + 2 + 3.5 + 2 = 13\r\n" );
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document.write( "Edwin
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document.write( "![\"\"](\"/images/stars/stars-13.gif\")
