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stephstewart1209
22.06.2019 •
Mathematics
Prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle., using rectangle method 1.
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Ответ:
Steps explained below.
Step-by-step explanation:
It is given that the vertices of the quadrilateral are G(1, -1), H(5, 1), I(4, 3) and J(0, 1).
A parallelogram is a rectangle if one of its angle is 90° (and therefore, all angles will be 90°).
A quadrilateral is a parallelogram if two pairs of opposite sides are equal.
So, lets prove GH = IJ, HI = GJ and H = 90°.
= 20
= 20
Therefore, GH = IJ
= 5
= 5
Therefore, HI = GJ
Two pairs of opposite sides are equal and hence GHIJ is a parallelogram.
Now, in Δ GHI,
= 25
Therefore,
.
This shows that Δ GHI is a right angled triangle and ∠ H = 90°.
Hence, GHIJ is a rectangle.
Ответ:
A statistic is resistant if it is not sensitive to extreme values.
(happy to help)
Step-by-step explanation: