Question
A triangle has vertices $A(1,0), B(5,0),$ and $C(2,3) .$ The triangle is rotated $90^{\circ}$ counterclockwise about the origin. Draw and label the image of the triangle.
Step 1
When a point $(x, y)$ is rotated $90^{\circ}$ counterclockwise about the origin, the new coordinates become $(-y, x)$. Show more…
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