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Geometry 15 Online
OpenStudy (anonymous):

ΔABC with vertices A(-3, 0), B(-2, 3), C(-1, 1) is rotated 180° clockwise about the origin. It is then reflected across the line y = -x. What are the coordinates of the vertices of the image?

OpenStudy (taramgrant0543664):

|dw:1438492100436:dw| So this is a kind of bad attempt on drawing the initial triangle, so you have to determine which point is your point of origin first so that we can rotate it 180 degrees

OpenStudy (taramgrant0543664):

The origin is where the two axis meet so right as (0,0) so we will have to rotate the triangle 180 degrees round that point

OpenStudy (taramgrant0543664):

|dw:1438492499423:dw| Do you have a guess on what those coordinates are for the new triangle?

OpenStudy (taramgrant0543664):

A is at (3,0) instead of (-3,0) B is at (2,-3) instead of (-2,30 C is at (1,-1) instead of (-1,1)

OpenStudy (taramgrant0543664):

After that you will want to reflect it across the line y=-x to determine your final triangle

OpenStudy (taramgrant0543664):

You're final triangle will have the points A(0,-3) B(-3,2) C(-1,1) I'm pretty sure it should be these points

OpenStudy (anonymous):

yes as taramgrant said .. going by similar procedure we will have the points of the reflected traingle(shown as dashed)|dw:1438493029033:dw|

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