How to you draw 2 different parallelograms that each have an area of 4 square inches? It can't be a rectangle or a square.
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document.write( "Start with a row of 4 1 inch x 1 inch squares in a row. That's\r\n" );
document.write( "4 square inches, like this: \r\n" );
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document.write( "But that won't do. So let's draw the diagonal of the left square,\r\n" );
document.write( "like the green line below:\r\n" );
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document.write( "Now draw another green line parallel to it on the far right side, \r\n" );
document.write( "like this:\r\n" );
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document.write( "Draw a line from the top of that green line on the right\r\n" );
document.write( "over to the last square on the right, like this.\r\n" );
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document.write( "That rectangle we've added on the right is exactly like the triangle on\r\n" );
document.write( "the far left. So let's erase the triangle on the far left, like this:\r\n" );
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document.write( "That's a parallelogram which is 4 square inches in area.\r\n" );
document.write( "The triangle we erased off the far left side is the same amount of\r\n" );
document.write( "area as the triangle we put on on the far right. If you like you\r\n" );
document.write( "can erase the partitions and just show the parallelogram:\r\n" );
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document.write( "-------------------------------------------------------\r\n" );
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document.write( "Now start with 4 1 inch by 1 inch squares arranged like this:\r\n" );
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document.write( "Now do the same sort of thing. Draw these two parallel\r\n" );
document.write( "green lines, and a line from the top of the right green line \r\n" );
document.write( "leftward to the squares:\r\n" );
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document.write( "Erase the triangle on the far left, which has the same area\r\n" );
document.write( "as the triangle we've added on the far right, so the resulting\r\n" );
document.write( "parallelogram has 4 square inches of area. I'll erase the\r\n" );
document.write( "\"partitions\" too:\r\n" );
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document.write( "There you go!\r\n" );
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document.write( "Edwin
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