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STatiana [176]
3 years ago
6

Point D(-1, 5) is reflected across the x-axis. Which statements about D' are true?

Mathematics
1 answer:
vodomira [7]3 years ago
5 0

The reflected point is D'(-1,-5)

For any point (x,y) reflected in the x-axis the image is (x,-y)

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Answer :

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Step by step explanation :

As we can see in figure,

∠F = 53°

∠H = 45°

So,

\:\mathsf{∠FGH\: +\: ∠GHF \:+ \:∠HFG\: = \:180°}

[Angle sum property, which states that the sum of all the angles of a triangle is 180°]

=> ∠FGH + 45° + 53° = 180°

=> ∠FGH = 180° - 98°

=> \:\bf\boxed{∠FGH\: =\:82°}

Now,

∠x + ∠FGH = 180°

[linear pair]

=> ∠x = 180° - 82°

=> \:\bf\boxed{∠x\: =\:98°}

<h2><u>Alternative Method :</u></h2>

We know that sum of two opposite interior angles is equal to the exterior angle.

So

∠x = ∠GHF + ∠HFG.

=> ∠x = 45 ° + 53°

=> \:\bf\boxed{∠x\: =\:98°}

Hope this helps!

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azamat
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