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ananyaamazing
14.03.2020 •
Mathematics
How to find a point which will turn a triangle into a rectangle? The triangle has points A (3,-3), B (11,3), and C (7,5). The triangle is a right scalene triangle.
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Ответ:
Check the picture below.
we know the slope of the segment AC is 2 or namely -8/-4, since a rectangle will have parallel sides, the segment on the other end will also have to be parallel and thus have the same slope, which is also the same slope as for the points (11,3) , (x,y).
Ответ:
a) right scalene triangle
b) (7, -5)
Step-by-step explanation:
a) Since you read the whole question, you know the points given will form a right triangle. (Any three vertices of a rectangle make a right triangle.) A graph is helpful for picking the vertex where the right angle is located.
The segment from A to C has a rise of 2 for each run of 1, so has a slope of 2/1 = 2.
The segment from C to B has a rise of -1 for each run of 2, so has a slope of -1/2.
These two segments have slopes that are opposite reciprocals of each other, so they are perpendicular. The right angle is at vertex C, and the hypotenuse of the triangle, AB, is the diagonal of the rectangle.
You can tell from the graph that the legs of the triangle are different lengths, so the triangle is a scalene right triangle.
__
b) The diagonals of a rectangle bisect each other, so have the same midpoint. This means that for fourth point D, we have ...
(A+B)/2 = (C+D)/2 . . . . . midpoints are the same for AB and CD
Solving for D, we find ...
D = A + B - C
Filling in the coordinate values, we get ...
D = (3, -3) +(11, 3) -(7, 5) = (3 +11 -7, -3 +3 -5)
D = (7, -5) . . . . coordinates of the fourth vertex
Ответ:
Explanation:
I would have to know what you learned; the entrepreneur must have many things, and I do not know what in specific, there are a lot of things.