Math Resources
Geometry Activities & Lessons
Looking for an alternative to another Geometry worksheet? Explore student-centered Geometry lessons that build understanding through progressive tasks, pattern recognition, and mathematical reasoning. You'll find activities spanning rigid transformations, triangle congruence and similarity, the Pythagorean theorem, circles, and area and volume, each with a built-in answer key and a print-ready format. Every lesson below was created by a teacher on STEMEngine and is free to browse.
14 free Geometry lessons available.
Honors Geometry III
Proof Playbook: Strategies, Pitfalls, and Power Moves for Geometric Proofs
9th BTC Style / Thinking Classrooms
7 tasks 50 minPreview
Geometry
Beyond Right Triangles: Law of Sines, Law of Cosines & the Ambiguous Case
High School Universal Design for Learning CCSS.MATH.CONTENT.HSG.SRT.D.10, CCSS.MATH.CONTENT.HSG.SRT.D.11
9 tasks 70 minPreview
Geometry
Parallel Lines Cut by a Transversal: Angle Relationships
High School Universal Design for Learning CCSS.MATH.CONTENT.8.G.A.5
7 tasks 60 minPreview
Geometry
Compass & Straightedge: Classical Geometric Constructions
High School Universal Design for Learning CCSS.MATH.CONTENT.HSG.CO.D.12, CCSS.MATH.CONTENT.HSG.CO.D.13
7 tasks 50 minPreview
Geometry
If–Then Logic and Two-Column Proofs: Conditionals, Converses, and Introductory Geometric Reasoning
High School Universal Design for Learning CCSS.MATH.CONTENT.HSG-CO.C.9,CCSS.MATH.CONTENT.HSG-CO.C.10
7 tasks 50 minPreview
Geometry
Unwrapping 3D Solids: Volume & Surface Area from Prisms to Spheres
High School BTC Style / Thinking Classrooms CCSS.MATH.CONTENT.HSG.GMD.A.1, CCSS.MATH.CONTENT.HSG.GMD.A.3, CCSS.MATH.CONTENT.HSG.MG.A.1
7 tasks 50 minPreview
Geometry
Circles: From Central Angles to Secants, Tangents & Sector Area
High School BTC Style / Thinking Classrooms CCSS.MATH.CONTENT.HSG.C.A.2,CCSS.MATH.CONTENT.HSG.C.A.3,CCSS.MATH.CONTENT.HSG.C.B.5
7 tasks 50 minPreview
Geometry
Proving Quadrilateral Properties Using Coordinates
High School BTC Style / Thinking Classrooms CCSS.MATH.CONTENT.HSG.GPE.B.4, CCSS.MATH.CONTENT.HSG.GPE.B.5, CCSS.MATH.CONTENT.HSG.CO.C.11
7 tasks 50 minPreview
Geometry
Zoom In, Zoom Out: Dilations, Scale Factor & Triangle Similarity
High School BTC Style / Thinking Classrooms CCSS.MATH.CONTENT.HSG.SRT.A.1, CCSS.MATH.CONTENT.HSG.SRT.A.3, CCSS.MATH.CONTENT.HSG.SRT.B.5
7 tasks 50 minPreview
Geometry
Centers of Triangles: Bisectors, Medians, Altitudes & Inequalities
High School BTC Style / Thinking Classrooms CCSS.MATH.CONTENT.HSG.CO.C.10, CCSS.MATH.CONTENT.HSG.CO.D.12
7 tasks 50 minPreview
Geometry
Triangle Congruence Criteria: From Recognition to Proof
High School BTC Style / Thinking Classrooms CCSS.MATH.CONTENT.HSG.CO.B.8, CCSS.MATH.CONTENT.HSG.CO.C.10
6 tasks 50 minPreview
Geometry
Rigid Transformations: Preserving Shape, Changing Position
High School BTC Style / Thinking Classrooms CCSS.MATH.CONTENT.HSG.CO.A.2, CCSS.MATH.CONTENT.HSG.CO.A.4, CCSS.MATH.CONTENT.HSG.CO.B.6
6 tasks 50 minPreview
Geometry
Tower Grids & Fiber Routes: From Segment Addition to Distance & Midpoint on the Coordinate Plane
High School BTC Style / Thinking Classrooms HSG.CO.A.1 / HSG.GPE.B.6 / HSG.GPE.B.7
7 tasks 50 minPreview
Geometry
Discovering SOH-CAH-TOA: NASA Satellite Dish Shadow Ratios
9th-10th Grade BTC Style / Thinking Classrooms HSG.SRT.C.6, HSG.SRT.C.8
7 tasks 50 minPreview