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Alternate Exterior Angles

If the lines ...

Question

If the lines l and m are parallel, then find the value of x in the given figure.

A

160°

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B

70°

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C

30°

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D

20°

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Solution

The correct option is D 20°
The two angles shown in the figure forms alternate exterior angles and hence they will be equal.
$\Rightarrow$ The value of x is 20°.

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