Basic constructions: Make and describe G-CO.A (1, 2), G-CO.D (12) G-CO.D: Make Geometric Constructions 2. Rigid motion transformations: construct, describe, notate G-CO.A (3), G-CO.D (12, 13) G-CO.A Experiment with transformations in the plane 3. Polygons/quadrilaterals: transformations, constructions, symmetries G-CO.A (3), G-CO.D (12, 13) G-CO.A Experiment with transformations in the plane 4. Congruent figures: proof using rigid motions, CPCTC (for triangles) G-CO.A (2, 4, 5), G-CO.B (6, 7), G-CO.D (12) G-CO.B Understand congruence in terms of rigid motions 5. Congruent Triangles 1: proof by mapping, SSS, SAS, ASA, AAS G-CO.A (5), G-CO.B (6, 7, 8), G-CO.C (10), G-CO.D (12) G-CO.B Understand congruence in terms of rigid motions 6. Parallel lines and transversals: proofs involving angles, problem solving with angles, construction of parallel lines G-CO.C (9), G-CO.D (12) G-CO.C Prove Geometric Theorems 7. Triangles: interior and exterior angle problems and proofs G-CO.B (7), G-CO.C (9, 10), G-CO.D (12) G-CO.C Prove Geometric Theorems 8. Congruent triangles 2: more formal proofs, extend to quadrilaterals and polygons G-CO.B (7),  G-CO.C (10),  G-CO.D (12, 13), G-SRT.B (5) G-CO.C Prove Geometric Theorems 9. Quadrilaterals: classification by diagonals G-CO.C (9, 10, 11), G-CO.D (12, 13), G-SRT.B (5) G-CO.C Prove Geometric Theorems 10. Similarity: define, minimum conditions for triangles G-CO.A (2, 5), G-CO.B (6, 7), G-CO.D (12), G-SRT.A (1, 2, 3), G-SRT.B (5) G-SRT.A Understand similarity in terms of similarity transformations 11. Similar triangles: proof, midsegment G-CO.A (5), G-CO.C (10), G-CO.D (12), G-SRT.A (2), G-SRT.B (4, 5) G-SRT.B Prove theorems involving similarity 12. Points of concurrency: construct and apply G-CO.C (10),  G-CO.D (12), G-SRT.B (4, 5) G-SRT.B Prove theorems involving similarity 13. Pythagorean theorem: similarity leads to PT, geometric mean triangles G-SRT.B (4, 5), G-SRT.C (8), G-MG.A (1, 3) G-SRT.C Define trigonometric ratios and solve problems involving right triangles 14: SOHCAHTOA G-SRT.C (6, 7, 8), G-MG.A (1, 3) G-SRT.C Define trigonometric ratios and solve problems involving right triangles 15. 3D-perimeter, area, volume formulas and problems G-GMD.A (1, 3), G-MG.A (1, 3) G-GMD.A Explain volume formulas and use them to solve problems 16. Modeling with geometry G-GMD.A (3), G-GMD.B (4), G-MG.A (1, 2, 3) G-MG.A Apply geometric concepts in modeling situations 17. Coordinate Plane 1: Distance, midpoint, slope G-CO.B (6), G-SRT.A (1, 2), G-GPE.B (5, 6) G-GPE.B Use coordinates to prove simple geometric theorems algebraically 18. Coordinate Plane 2: Polygons and Proof G-CO.B (6), G-CO.C (10, 11), G-SRT.A (1, 2), G-GPE.B (4, 5, 6, 7) G-GPE.B Use coordinates to prove simple geometric theorems algebraically 19. Circles 1: Define, describe, coordinate plane, equation G-CO.D (12), G-SRT.B (5), G-C.A (1), G-GPE.A (1), G-GPE.B (4) G-GPE.A Translate between the geometric description and the equation for a conic section circle 20. Angles in Circles: sector, arc, radians, circum/inscribed G-CO.D (12), G-SRT.B (5), G-C.A (2), G-C.B (5) G-C.B Find arc lengths and areas of sectors of circles 21. Segments in Circles: tangent, secant, chord, polygons G-CO.D (12, 13), G-SRT.B (5), G-SRT.C (8), G-C.A (2, 3), G-MG.A (1, 3) G-C.A Understand and apply theorems about circles