SOLUTION: The vertices of a triangle are A (4,-4), B (10,4) and C (2,6). Find the distance from the vertex to the midpoint of the opposite side

Algebra ->  Length-and-distance -> SOLUTION: The vertices of a triangle are A (4,-4), B (10,4) and C (2,6). Find the distance from the vertex to the midpoint of the opposite side      Log On


   



Question 1004833: The vertices of a triangle are A (4,-4), B (10,4) and C (2,6). Find the distance from the vertex to the midpoint of the opposite side
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
given:
The vertices of a triangle are:
A (4,-4), B (10,4) and C (2,6)
plot the points and draw a triangle:

if the vertex C, the opposite side is AB
so, find the midpoint of the opposite side AB
Solved by pluggable solver: Midpoint


The first point is (x1,y1). The second point is (x2,y2)


Since the first point is (4, -4), we can say (x1, y1) = (4, -4)
So x%5B1%5D+=+4, y%5B1%5D+=+-4


Since the second point is (10, 4), we can also say (x2, y2) = (10, 4)
So x%5B2%5D+=+10, y%5B2%5D+=+4


Put this all together to get: x%5B1%5D+=+4, y%5B1%5D+=+-4, x%5B2%5D+=+10, and y%5B2%5D+=+4

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Finding the x coordinate of the midpoint: Add up the corresponding x coordinates x1 and x2 and divide that sum by 2


X Coordinate of Midpoint = %28x%5B1%5D%2Bx%5B2%5D%29%2F2


X Coordinate of Midpoint = %284%2B10%29%2F2


X Coordinate of Midpoint = 14%2F2


X Coordinate of Midpoint = 7



So the x coordinate of the midpoint is 7


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Finding the y coordinate of the midpoint: Add up the corresponding y coordinates y1 and y2 and divide that sum by 2


Y Coordinate of Midpoint = %28y%5B1%5D%2By%5B2%5D%29%2F2


Y Coordinate of Midpoint = %28-4%2B4%29%2F2


Y Coordinate of Midpoint = 0%2F2


Y Coordinate of Midpoint = 0


So the y coordinate of the midpoint is 0



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Summary:


The midpoint of the segment joining the two points (4, -4) and (10, 4) is (7, 0).


So the answer is (7, 0)




the midpoint is at (7,0) and C is at (2,6)
find the distance between these two points:

Solved by pluggable solver: Distance Formula


The first point is (x1,y1). The second point is (x2,y2)


Since the first point is (7, 0), we can say (x1, y1) = (7, 0)
So x%5B1%5D+=+7, y%5B1%5D+=+0


Since the second point is (2, 6), we can also say (x2, y2) = (2, 6)
So x%5B2%5D+=+2, y%5B2%5D+=+6


Put this all together to get: x%5B1%5D+=+7, y%5B1%5D+=+0, x%5B2%5D+=+2, and y%5B2%5D+=+6

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Now use the distance formula to find the distance between the two points (7, 0) and (2, 6)



d+=+sqrt%28%28x%5B1%5D-x%5B2%5D%29%5E2+%2B+%28y%5B1%5D+-+y%5B2%5D%29%5E2%29


d+=+sqrt%28%287+-+2%29%5E2+%2B+%280+-+6%29%5E2%29 Plug in x%5B1%5D+=+7, y%5B1%5D+=+0, x%5B2%5D+=+2, and y%5B2%5D+=+6


d+=+sqrt%28%285%29%5E2+%2B+%28-6%29%5E2%29


d+=+sqrt%2825+%2B+36%29


d+=+sqrt%2861%29


d+=+7.81024967590665

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Answer:


The distance between the two points (7, 0) and (2, 6) is exactly sqrt%2861%29 units


The approximate distance between the two points is about 7.81024967590665 units



So again,


Exact Distance: sqrt%2861%29 units


Approximate Distance: 7.81024967590665 units