Gallery Problems

Reflect Across the Origin

Work Time

Reflect Across the Origin

You can reflect figures across the origin (0, 0).

For example, to reflect point A across the origin, draw a line from point A through the origin and mark a point on the other side of the origin that is the same distance from the origin.

  1. Reflect the given figure across the origin. Label the coordinates of vertices of the original triangle and the reflected triangle. 
  2. Reflect other figures across the origin.
  3. What rule can you use to reflect any point (a,b) across the origin?

HANDOUT: Reflect Across the Origin