document.write( "Question 1064005: ΔABC has vertices at A(5,2), B(−3,1), and C(−2,5). Point D is located on the intersection of the altitude and AB�, in such a way that D has coordinates at approximately (−1.52,1.18).\r
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\n" ); document.write( "\n" ); document.write( "Match each question with the correct measurement, rounded to one decimal place.\r
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\n" ); document.write( "What is the approximate area of the triangle?
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\n" ); document.write( "What is the approximate length of the base of the triangle for the given altitude?
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\n" ); document.write( "What is the approximate length of the altitude of the triangle?
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\n" ); document.write( "16.1 units
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\n" ); document.write( "3.9 units
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\n" ); document.write( "8.1 units
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\n" ); document.write( "7.6 units
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\n" ); document.write( "15.8 units
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\n" ); document.write( "8.0 units
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Algebra.Com's Answer #843962 by ikleyn(52778)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "        Here I will explain you how to find quickly the area of triangle ABC \r
\n" ); document.write( "\n" ); document.write( "        with the vertices at the integer grid points in a coordinate plane.\r
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\n" ); document.write( "\n" ); document.write( "Draw the minimal rectangle on the grid which concludes the given triangle.
\n" ); document.write( "Identify the triangles on the grid inside this rectangle that are outside the given triangle.\r
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\n" ); document.write( "\n" ); document.write( "It is quite easy to find the area of each such a triangle.\r
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\n" ); document.write( "\n" ); document.write( "After that, you will find the area of your triangle ABC mentally, by subtraction
\n" ); document.write( "the areas of the three other triangles from the area of rectangle.\r
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\n" ); document.write( "\n" ); document.write( "Notice that doing this way, You will find the PRECISE area of triangle ABC mentally and quickly,
\n" ); document.write( "without doing boring calculations.\r
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\n" ); document.write( "\n" ); document.write( "It is the best strategy and the most valuable piece of knowledge, which you can learn from this problem.\r
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