required (hard)helpful (soft)MasteredLearningNeeds workNot startedLocked
Target↳ A tangent is perpendicular to the radiusConstructing TangentsG12Not started
↳ Circle proofs, flawed arguments and counterexamplesCircle GeometryG12Not started
↳ Tangent-chord angle and segment lengthsCircle GeometryG12Not started
↳ Writing a two-column proofParallel and Perpendicular LinesG12Not started
Forms of Mathematical ReasoningG11Not started
Multi-step one-variable linear equationsG9Not started
↳ Cyclic quadrilateralsCircle GeometryG12Not started
↳ Proving that a construction worksGeometric ConstructionsG12Not started
↳ Proving the triangle angle theoremsParallel and Perpendicular LinesG12Not started
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.
Demo student's progress · learn the items on the left, then this · hover a card to trace its chain · click a lessoned card to open it