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Reflections and Rot
Math Reflections + Rotations
Question | Answer |
---|---|
Reflection over X axis | (x,-y) |
Reflection over the y-axis | (-x,y) |
Reflection over y=x | (y,x) |
Reflection over origin | (-x,-y) |
90° counterclockwise rotation | (−y,x) |
180° clockwise and counterclockwise rotation: | (−x,−y) |
270° counterclockwise rotation | (y,−x) |
If the center of dilation is the origin you __________ | Multiply cords by scale factor |
If a shape is dilated you do _______ to find the area. | Multiple original area by scale factor^2 |
Reflection over y=-x | (-y,-x) |