Curated OER
Parallel Lines and Transversals
In this parallel lines and transversals learning exercise, 10th graders solve eleven problems that include identifying and defining transversals and parallel lines. First, they state the transversal that forms each pair of angles and...
University of Cambridge
University of Cambridge: Nrich: A Chain of Eight Polyhedra
Eight different polyhedra are given along with a challenge in this game. Can you arrange them so that their faces match in a chain? A solution is available to check your answers.