Current School Mastery™
Grades 9 & 10
Geometry
Transformations, congruence, similarity, proof, right triangles, circles, area, and volume.
1
Transformations
Rigid motions as the definition of congruence.
2
Proof
Two-column, paragraph, and flow proofs of triangle and circle theorems.
3
Similarity
Dilations and the ratio-preserving definition of similarity.
Definition
Geometry in one line
Transformations, congruence, similarity, proof, right triangles, circles, area, and volume.
Every course builds on the last; each opens the next.
Where this leads next
Geometry→Algebra II
Mastering Geometry unlocks the reasoning structures of Algebra II.
Sample challenges
AdvancedApproachable
Foundational Problem
A representative problem for this course — accessible now, with room to generalize.
Geom
AdvancedChallenging
Stretch Problem
A problem that extends the course's core ideas into non-routine territory.
GeomReasoning
AdvancedOlympiad
Transfer Problem
Apply this course's structure to a competition or advanced context.
GeomTransfer