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Algebra 8 Online
OpenStudy (lizett22):

An irregular parallelogram rotates 360° about the midpoint of its diagonal. How many times does the image of the parallelogram coincide with its preimage during the rotation?

OpenStudy (lizett22):

its preimage during the rotation? 2 4 6 8

OpenStudy (eyust707):

|dw:1395268499045:dw|

OpenStudy (eyust707):

|dw:1395268524590:dw|If you rotate it about that point how many times would it line up with the original image?

OpenStudy (eyust707):

You rotate a full time around (360 degrees)

OpenStudy (lizett22):

2?

OpenStudy (eyust707):

yep

OpenStudy (lizett22):

your awesome :D can you help me with more ? :( its plato

OpenStudy (eyust707):

sure

OpenStudy (lizett22):

Which transformation will always map a parallelogram onto itself?

OpenStudy (lizett22):

a 90° rotation about its center a reflection across one of its diagonals a 180° rotation about its center a reflection across a line joining the midpoints of opposite sides Done

OpenStudy (eyust707):

|dw:1395268801874:dw|Heres a parallelogram. Try some of those on this. Which ones definately do not work?

OpenStudy (lizett22):

d?

OpenStudy (lizett22):

? :(

OpenStudy (lizett22):

@dreamer02 ΔABC is translated 6 units up and 3 units left to create ΔA′B′C′. If vertex A is located at (-1, 2), what are the coordinates of A′ ? A(5, -1) B(-4, 8) C(2, -4) D(-7, -1)

OpenStudy (anonymous):

B

OpenStudy (lizett22):

OpenStudy (lizett22):

thanks it was right :)

OpenStudy (anonymous):

The third one (0.5)

OpenStudy (lizett22):

ΔXYZ is translated 4 units up and 3 units left to yield ΔX′Y′Z′. What is the distance between any two corresponding points on ΔXYZ and ΔX′Y′Z′ ? 25 units 7 units 5 units 7√ units

OpenStudy (anonymous):

last one

OpenStudy (anonymous):

noo

OpenStudy (anonymous):

second, sorry

OpenStudy (lizett22):

ah i got it wrong :(

OpenStudy (lizett22):

iclicked the last answer lol its okay :/

OpenStudy (anonymous):

sorry...

OpenStudy (lizett22):

lol sorry its just i can only get one wrong

OpenStudy (lizett22):

OpenStudy (lizett22):

@dreamer02

OpenStudy (anonymous):

ah, for that i have no idea :/

OpenStudy (lizett22):

i guess right lol it was A :D what about this one

OpenStudy (lizett22):

AB¯¯¯¯¯ is congruent to CD¯¯¯¯¯. Point P is the midpoint of AB¯¯¯¯¯, and point Q is the midpoint of CD¯¯¯¯¯. Which relationship must be true? AC¯¯¯¯¯≅PQ¯¯¯¯¯ BC¯¯¯¯¯≅CQ¯¯¯¯¯ PB¯¯¯¯¯≅CD¯¯¯¯¯ AP¯¯¯¯¯≅DQ¯¯¯¯¯ Done

OpenStudy (lizett22):

OpenStudy (lizett22):

@dreamer02

OpenStudy (lizett22):

@dreamer02 ? :(

OpenStudy (lizett22):

i already have that answer i need a new one :)

OpenStudy (lizett22):

OpenStudy (anonymous):

seems like the final one?

OpenStudy (anonymous):

for the previous question

OpenStudy (lizett22):

wait what ? O.o

OpenStudy (anonymous):

for the last question, what is the figure?

OpenStudy (lizett22):

dik what your trying to say ...

OpenStudy (lizett22):

@dreamer02

OpenStudy (anonymous):

click on "figure" and post a photo of it

OpenStudy (lizett22):

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