HINT: Drag the ORANGE point to reflect ΔABC across the x-axis. Notice that all of the y-coordinates of the vertices have been multiplied by –1.
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HINT: To translate the triangle, drag the PURPLE point to the correct location. Name the coordinates of the vertices of the new triangle.
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b. Rotate ΔABC 90° counterclockwise (↺) about the origin. Then reflect the result across the y-axis. Name the coordinates of the vertices of the result.
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HINT: If you have completed part (a) correctly, ΔABC will appear in RED. Use the slider below to rotate ΔABC.