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Parallel and Perpendicular Lines

question 1 of 2 Grade: Ten - G10
question 1 of 2 Grade: Ten - G10

Q: If line AB is parallel to line CD, and line EF is perpendicular to AB, is EF also perpendicular to CD?

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Did You Know?

∛-8 = -2. Then √(-2) is not real. Perhaps they mean cube root of -8 is -2, then square root of that is √(-2) = i√2 (imaginary). But likely they mean √(∛(-8))? Actually ∛(-8) = -2, then √(-2) is imaginary. Possibly misprint? Maybe they meant √[³√(-8)]? But typical: √(∛(-8)) = √(-2) not real. Could be they want √(∛(8))? Check original: '√∛-8' likely means square root of cube root of -8. Answer: √(-2) = i√2.

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Did You Know?

∛-8 = -2. Then √(-2) is not real. Perhaps they mean cube root of -8 is -2, then square root of that is √(-2) = i√2 (imaginary). But likely they mean √(∛(-8))? Actually ∛(-8) = -2, then √(-2) is imaginary. Possibly misprint? Maybe they meant √[³√(-8)]? But typical: √(∛(-8)) = √(-2) not real. Could be they want √(∛(8))? Check original: '√∛-8' likely means square root of cube root of -8. Answer: √(-2) = i√2.

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