Question

In the following figure, find the value of a. AB and CD are parallels.

Answer 1

Its kind of tricky for me. I tried for half an hour and I got anywhere. Any help will be welcomed

Answer 2

Do u know about angles in between parallel lines.

Answer 3

yeah i just read about that. I know the relationships

Answer 4

ABCD

Answer 5

Then try to make some eq. for {a}. U can do it dude.bcoz if i solve this it would be very long steps question.

Answer 6

i can give u only hints.

Answer 7

yeah but still dont get it

Answer 8

sorry

Answer 9

can you help me through skype. We can talk and is easier

Answer 10

first tell me what is the meaning of skype coz i don't know english very much .

Answer 11

skype is an application that allows voice over internet

Answer 12

How can i do that?

Answer 13

or msn?

Answer 14

only chating

Answer 15

online*

Answer 16

download skype in your computer and install it. Its eassy. I can wait for u

Answer 17

k!

Answer 18

Q+R+S = 180
Q = 180-11A
R= 180-7A -8A
S = 180-2A-4A

Answer 19

Im the meanwhile im going to try to solve another one

Answer 20

KABLAM!

Answer 21

That is exaclty where i get stucked smoothmath. What is the next step

Answer 22

Really? You got that far but could not solve it?

Answer 23

Plug in for Q,R, and S. Solve for a.

Answer 24

Q+R+S = 180
Q = 180-11A
R= 180-7A -8A
S = 180-2A-4A
(180 -11A)+(180-7A-8A)+(180-2A-4A) = 180
Group like terms and blah blah blah.

Answer 25

Ok. let me do. correct me if im wrong. Im good at many other things, but geometry really got me. So, many of my questions are very easy for others :)

Answer 26

Don't be discouraged. This is a very tricky question. I am just quite good.

Answer 27

S = 180-2A-4A
I'm not sure about this one

Answer 28

180-2A-4A would be the angle below S right?

Answer 29

So S should be 180-(180-2A-4A) = 180-180+2A+4A= 2A+4A

Answer 30

Not sure about this but I think it is worth a look.

Answer 31

Ah yes. Good catch, Zepp.

Answer 32

my net is not fast as i want .so sorry but if i have short solution for this I will post that later.

Answer 33

(180 -11A)+(180-7A-8A)+(2A+4A) = 180 is the corrected equation then.

Answer 34

:)

Answer 35

cool dont worry mashe.

Answer 36

Vertical angles are congruent, sum of interior angles of a quadrilateral is 360 and if two parallel lines are cut by a transversal, corresponding angles are congruent were used with arithmetic to get a = 7.5

Answer 37

so until now who has the correct answer?

Answer 38

Directrix?

Answer 39

Umm, @Directrix I would like you to explain why there's an angle with value 13a?