How to Rotate a shape about the origin 90° counter-clockwise

Graph the image of the given triangle, rotated 90° counterclockwise about the origin.

Transformations - Rotate 90 Degrees Around The Origin

4.3 D) Rotation: Undertaking – Transformations – Edexcel GCSE Maths Higher - Elevise

IXL Rotations

Geometry Rotations Clockwise and Counterclockwise Explained! — Mashup Math

3 Ways to Rotate a Shape - wikiHow

Rotation of 90 Degrees about the Origin

Rotating shapes about the origin by multiples of 90° (article)

Rotation Rules (Explained w/ 16 Step-by-Step Examples!)