Common Core · Grade 8
8.G.A.1
Grade 8 — Verify experimentally that rotations, reflections and translations preserve lengths, angle measures and parallel lines.
The skill that covers it
What a student should be able to do
- Find the image of a point or a figure under a translation, a reflection, a rotation, or a composition of two of them.
- Write the coordinate rule for a transformation and identify a transformation from its rule.
- Decide whether two figures are congruent, name the rigid motions that map one onto the other, and count the lines of symmetry and order of rotational symmetry of a single figure.
- Dilate a figure from the origin by a scale factor and relate the image to similarity.