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?
- 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?
- 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?
- The same distance: 5 units right and 3 units up
- A translation shifts a figure in which direction?
- In a straight line, in the same direction for every point on the figure
- What is a reflection in geometry?
- A flip of a figure across a line, creating a mirror image
- What is the line across which a figure is reflected called?
- The line of reflection
- When reflecting a point across a vertical line, which coordinate changes?
- The x-coordinate (the horizontal coordinate)
- When reflecting a point across a horizontal line, which coordinate changes?
- The y-coordinate (the vertical coordinate)
- Does a reflection preserve the size and shape of a figure?
- Yes, but the figure is flipped
- What is a rotation in geometry?
- A turn of a figure around a fixed point by a given angle
- The fixed point around which a figure rotates is called what?
- The center of rotation
- How many degrees is a quarter turn rotation?
- 90 degrees
- How many degrees is a half turn rotation?
- 180 degrees
- How many degrees is a full rotation?
- 360 degrees
- What happens to size and shape during a rotation?
- They are preserved, the figure does not change size or shape