Recognize that shape is independent of scale, color, and orientation. Identify squares, rectangles, triangles, circles, hexagons (just regular ones for now), trapezoids, and rhombuses.
Again, why so vague? Don't say shape, list the shapes!
Name shapes 3 by Khan Academy
Conclude by leading this investigation:
1.G.A.1: Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.