This page includes a lesson covering
Cartesian coordinate system - Wikiwand
Reflecting a Shape in y = −x Using Cartesian Coordinates (Key Stage 3)
Rotating shapes about the origin by multiples of 90° (article)
Use All 4 Quadrants of the Coordinate Plane
What does it mean to reflect over the y=x line? - Quora
Reflections on the Coordinate Plane
Write the reflection of point B (3, -4) in x-axis and y-axis.
Coordinate Geometry: Reflections in the x-y Plane
Translations, Rotations, and Reflections
Symmetry, Free Full-Text