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lyudmila [28]
2 years ago
12

Does anybody know the answer?

Mathematics
1 answer:
V125BC [204]2 years ago
8 0

Answer:

option a

Explanation:

AD and DE are perpendicular lines, meaning they are at a 90° angle. likewise, AD and AB are also perpendicular lines. this means that there are 90° angles at ∠ADE and ∠DAB.

since both DE and AB are perpendicular to the same line and are positioned at the same angle away from it, they are parallel lines.

i hope this helps! :D

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

see explanation

Step-by-step explanation:

If A +B = 45° then tan(A+B) = tan45° = 1

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