•  Perseverance and Problem Solving I can persevere in solving problems, choose effective problem solving strategies, and use mathematical precision. Reasoning and Justification I can justify my reasoning, construct viable arguments, and critique the reasoning of others. Probability I can understand and calculate probabilities. Transformations I can use rigid transformations. Lines and Angles I can use theorems, postulates, or definitions about lines and angles. Similarity I can understand and justify triangle similarity. Congruence I can understand and justify triangle congruence. Triangles I can use appropriate tools to find missing sides and angles in right and non-right triangles. Proofs I can use flow charts and two-column proofs to prove theorems about lines, angles, triangles and quadrilaterals. Coordinate Geometry I can use the coordinate grid and composite shapes to justify claims and calculate length, area, and perimeter. Circles I can work with properties of circles involving angles, area, circumference, center and radius. Volume I can calculate the volume of three-dimensional figures. Conic Sections I can understand and analyze cross-sections and conic sections. Construction and Models I can use tools and methods to create constructions and understand mathematical models.