Scaling up and scaling down. Lessons covering dilations, scale factors, and the Side-Splitter Theorem are essential. Because this is a static site (except for interactivity via JavaScript), the PDF generation for practice worksheets might be a hidden feature, allowing students to print problem sets with scaled diagrams.
Starting with points, lines, angles, and basic postulates. If you’ve forgotten what “vertical angles” are or why they’re equal, start here. geometry-lessons.github.io
Understanding acute, obtuse, right, and straight angles, alongside protractor postulates. Scaling up and scaling down