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# If three straight lines intersect at a point as shown in the figure ab

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Re: If three straight lines intersect at a point as shown in the figure ab [#permalink]
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Bunuel wrote:

If three straight lines intersect at a point as shown in the figure above, what is the value of x ?

(1) x = y = z
(2) z = 60

As the angles are transversal angle:
$$2x+2y+2z=360$$

$$x+y+z=180$$

(1) So, $$3x=180; x=60;$$ Sufficient.

(2) $$z = 60;$$ No information is given for x and y; Insufficient.

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Re: If three straight lines intersect at a point as shown in the figure ab [#permalink]
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Re: If three straight lines intersect at a point as shown in the figure ab [#permalink]
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