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Mathematics 7 Online
OpenStudy (anonymous):

Geometry help?

OpenStudy (ineedserioushelp):

I'll try

OpenStudy (anonymous):

What is the line of reflection between pentagons PQRST and P'Q'R'S'T'? x = 1 ^ would it be this answer? y = x x = 0 y = 0

OpenStudy (goformit100):

x - axsis is looking like the answer for it

ganeshie8 (ganeshie8):

First, see that X-axis is in between both d pentagons.

OpenStudy (anonymous):

I see that..

ganeshie8 (ganeshie8):

good :) see that its exactly in mid of both pentagons

OpenStudy (ineedserioushelp):

Yea I'll leave it to ganshie8 he is a pro :p

OpenStudy (ineedserioushelp):

I don't know how to explain, I could only give answer so he'll take care of you :)

ganeshie8 (ganeshie8):

all points of both pentagons are at SAME distance from X-axis, so x-axis is the line of reflection.

OpenStudy (anonymous):

@iNeedSeriousHelp was my answer right or wrong, though?

OpenStudy (ineedserioushelp):

wrong I think... but we'll see what ganeshie8 says

ganeshie8 (ganeshie8):

@iNeedSeriousHelp go ahead explain :) idk how to explain well to... i just try thats all :)

OpenStudy (ineedserioushelp):

I don't know how to explain, I can only say what I THINK is the answer...

ganeshie8 (ganeshie8):

its okay :) as i said, x-axis is the reflection line.

OpenStudy (anonymous):

is it y=x?

ganeshie8 (ganeshie8):

equation of x-axis is : y=0

OpenStudy (anonymous):

ok another question then. If triangle XYZ is reflected across the line y = 1 to create triangle X'Y'Z', what is the ordered pair of X'? (-4, 5) ^ would this be the answer? (-2, 5) (4, -3) (4, -5)

ganeshie8 (ganeshie8):

nope

ganeshie8 (ganeshie8):

y=1 is a horizontal line, when u reflect something across horizontal line, x-coordinate WILL NOT change.

ganeshie8 (ganeshie8):

so X' wud be (4, something)

OpenStudy (anonymous):

(4, -5) ?

ganeshie8 (ganeshie8):

Answer : (4, -3)

OpenStudy (anonymous):

what omg

ganeshie8 (ganeshie8):

i see that you're just guessing :) these things are really easy once u start *seeing* them i guess lol

ganeshie8 (ganeshie8):

oh wait, i see why u said (4, -5). (4, -5) is correct IF the line of reflection is x-axis

ganeshie8 (ganeshie8):

but since line of reflection is y=1, the answer wud be (4, -3)

OpenStudy (anonymous):

|dw:1381216888409:dw| that's where i'm confused. that's how i got the (4, -5 )

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