Translations, reflections, rotations, and lines of symmetry for middle school geometry.
30 cards · basic cards · AI-written, checked twice. Edit anything.
- What is a translation in geometry?
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A movement of a figure in a straight line without rotating or flipping it- When a figure is translated, does its size or shape change?
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No, a translation preserves both size and shape- If you translate a triangle 5 units right and 3 units up, how far does each vertex move?
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The same distance: 5 units right and 3 units up- A translation shifts a figure in which direction?
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In a straight line, in the same direction for every point on the figure- What is a reflection in geometry?
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A flip of a figure across a line, creating a mirror image- What is the line across which a figure is reflected called?
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The line of reflection- When reflecting a point across a vertical line, which coordinate changes?
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The x-coordinate (the horizontal coordinate)- When reflecting a point across a horizontal line, which coordinate changes?
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The y-coordinate (the vertical coordinate)- Does a reflection preserve the size and shape of a figure?
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Yes, but the figure is flipped- What is a rotation in geometry?
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A turn of a figure around a fixed point by a given angle- The fixed point around which a figure rotates is called what?
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The center of rotation- How many degrees is a quarter turn rotation?
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90 degrees- How many degrees is a half turn rotation?
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180 degrees- How many degrees is a full rotation?
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360 degrees- What happens to size and shape during a rotation?
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They are preserved, the figure does not change size or shape
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