"Geometry" is a high school course (typically ages 14-18); it has more advanced topics than the latter.
"Basic geometry & measurement" is a primary school course (typically ages 14 and younger); it has more basic topics than the former.

If you want to know specifically which topics are covered in each, you can look at the titles of the Units in each course, or even the titles of the videos & articles.

~ Janice, KA user

Hi Mike!

Janice summarized it well! To break down the target levels and content a bit more:

• Basic Geometry & Measurement: This is geared toward middle school (roughly 5th–8th grade). It focuses on fundamental, practical concepts like finding area, perimeter, volume, basic angles, and working with basic shapes and coordinate planes.

• High School Geometry: This is a full high school-level course. It builds on those basics and dives deeper into formal mathematical proofs, trigonometry (sine, cosine, tangent), transformations, analytic geometry, and circle theorems.

If you've just finished Algebra 1, High School Geometry is the standard next course to take!"