May somebody help me on this question please. Kim performed a transformation on triangle ABC to create triangle A'B'C' as shown in the figure below:
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OpenStudy (anonymous):
OpenStudy (anonymous):
What transformation did Kim perform to create triangle A'B'C'?
Reflection across the x-axis
Rotation of 270 degrees counterclockwise about the origin
Reflection across the y-axis
Rotation of 90 degrees counterclockwise about the origin
jimthompson5910 (jim_thompson5910):
Did a reflection or rotation take place?
OpenStudy (anonymous):
It looks like a reflection
jimthompson5910 (jim_thompson5910):
correct (notice how the orientation is flipped)
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jimthompson5910 (jim_thompson5910):
to go from A to B to C, you go counter clockwise
but to go from A' to B' to C', you're going the opposite way: clockwise
so that's what I mean by "orientation is flipped"
jimthompson5910 (jim_thompson5910):
whenever you have orientation reversed, you're going to have a reflection (since everything is backwards)
jimthompson5910 (jim_thompson5910):
so you need to find out which line you're reflecting over
OpenStudy (anonymous):
So in this case the answer would be C
OpenStudy (anonymous):
@jim_thompson5910
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jimthompson5910 (jim_thompson5910):
draw an xy axis and label them
|dw:1400099655867:dw|
jimthompson5910 (jim_thompson5910):
|dw:1400099671141:dw|
OpenStudy (anonymous):
Ohh so its A because it reflected itself that way @jim_thompson5910