hello

Neha · 2006-10-13 05:58:07

Compute the values for x,y,and z

Last edited by Payari (2006-10-13 05:58:54)

mathsyperson · 2006-10-13 06:01:58

You need to use various rules about parallel lines for that one. In particular, the X-rule and the Z-rule. You can use them to show that 4x and 2z both equal 80°, and from there it should be simple.

luca-deltodesco · 2006-10-13 06:03:06

as the two lines are intersecting, the opposite angles are equal

so 4x = 80,x = 20

then, angles add together to 360

so 360 - 80*2 = 2y * 2
200 = 4y
y = 50

then as those two arrowed lines are perpendicular, and the other line intersects both, the set of angles are exactly the same, so 2z = 80, z = 40

Neha · 2006-10-13 06:07:56

thank you all so very much i was doing it this way :
i tryed to do that.
i said that the striaght line has to 180 degrees.
so i put 180 = 4x or 2y or 2z...
but answers came out totally different from yours

polylog · 2006-10-13 06:34:25

Actually you could have done it using 180 also to get y, you were on the right track:

180 = 80 + 2y
100 = 2y
y = 50

holla · 2006-10-13 06:51:17

that was super close! i wouldn't have done it that way--are there other preferred methods of doing this?

Neha · 2006-10-16 02:35:15

yeah i could of done it this way...duhhhhhhh thanks

Math Is Fun Forum

#1 2006-10-13 05:58:07

hello

#2 2006-10-13 06:01:58

Re: hello

#3 2006-10-13 06:03:06

Re: hello

#4 2006-10-13 06:07:56

Re: hello

#5 2006-10-13 06:34:25

Re: hello

#6 2006-10-13 06:51:17

Re: hello

#7 2006-10-16 02:35:15

Re: hello

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