document.write( "Question 272094: Hi
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document.write( "I'm working with Isosceles triangles. I have (-9,-8) (-4,10)and (-4,-8)
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document.write( "I think this is an Isosceles because the lengths of 2 sides are the same. Is this correct?\r
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document.write( "Also, is the length of the base 5?
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document.write( "And lastly I need to figure out the area. I've been using the midpoint formula and am getting (-4,1) is this correct? I'm then using the 1st point and the midpoint to plug into the distance formula. I'm getting 106 under a square root sign.....Do I then use 10.29 to plug in the Area formula? I'm trying A= 1/2 (base)5 (height) 10.29=25.73...I don't think I'm supposed to end up with a decimal. Please help me find where I'm going wrong.
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document.write( "Thanks
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document.write( "Rachel \n" );
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Algebra.Com's Answer #199100 by dabanfield(803)![]() ![]() ![]() You can put this solution on YOUR website! I'm working with Isosceles triangles. I have (-9,-8) (-4,10)and (-4,-8) \n" ); document.write( "I think this is an Isosceles because the lengths of 2 sides are the same. Is this correct? \n" ); document.write( "Also, is the length of the base 5? \n" ); document.write( "And lastly I need to figure out the area. I've been using the midpoint formula and am getting (-4,1) is this correct? I'm then using the 1st point and the midpoint to plug into the distance formula. I'm getting 106 under a square root sign.....Do I then use 10.29 to plug in the Area formula? I'm trying A= 1/2 (base)5 (height) 10.29=25.73...I don't think I'm supposed to end up with a decimal. Please help me find where I'm going wrong. \n" ); document.write( "Thanks \n" ); document.write( "Rachel \n" ); document.write( "0 solutions\r \n" ); document.write( "\n" ); document.write( "Let's say point A is (-9,-8), B is (-4,-8) and C is (-4,10)\r \n" ); document.write( "\n" ); document.write( "Side AB is sqrt((-8--8)^2 + (-4--9)^2) = sqrt(0^2 + 5^2) = 5 \n" ); document.write( "Side BC is sqrt((10--8)^2 + (-4--4)^2) = sqrt(18^2+0^2) = sqrt(18^2) = 18 \n" ); document.write( "Side AC is sqrt((10--8)^2 + (-4--9)^2) = sqrt(18^2+5^2) = sqrt(349)\r \n" ); document.write( "\n" ); document.write( "The triangle is not isosceles :)\r \n" ); document.write( "\n" ); document.write( "The area of the triangle is 1/2*base*height. \n" ); document.write( "The base of this triangle is side AB and the height is BC. (notice that B and C both have an x-coordinate of -4 so BC is vertical. The points A and B have the same y-coordinate of -8 so AB is horizontal. AB and BC form a right angle). \r \n" ); document.write( "\n" ); document.write( "The area then is 1/2*5*18 = 45 \n" ); document.write( " |