Plane Geometry Course
Master triangle and circle geometry with rigorous constructions, key theorems, and precise calculations. This Plane Geometry Course sharpens proof skills and problem-solving for advanced mathematics, contests, and professional applications.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
The Plane Geometry Course delivers a focused, practical path to mastering core results on triangles and circles. Explore precise definitions, congruence and similarity, triangle inequalities, and multiple area formulas. Practice ruler-and-compass constructions, chord–radius relationships, and Thales’ theorem, while strengthening algebraic techniques essential for clear, accurate geometric reasoning and reliable problem solving.
Elevify advantages
Develop skills
- Triangle construction mastery: build and justify figures with ruler and compass.
- Circle and chord problem solving: apply inscribed angles and distance formulas.
- Triangle classification expertise: use inequalities, Pythagoras, and cosine law.
- Precision area computation: apply Heron’s formula and alternative area methods.
- Geometry proof techniques: leverage medians, bisectors, and Thales’ theorem.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workloadWhat our students say
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