Solid Geometry · Unit 1

Lines & Planes in Space

The rules of 3D: how planes are determined, how lines can miss each other without being parallel, and how to measure distances and angles when things leave the flat page.

Builds on

Plane geometry — angles, parallel lines, the Pythagorean theorem, right-triangle trigonometry.

Lessons
  1. 01Planes & How They Meet
  2. 02Parallel & Skew Lines
  3. 03Perpendicular to a Plane
  4. 04Angles in Space
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