Supplementary angles are like two slices that, when put together, form a half-pizza (180 degrees). Vertical angles are like the slices directly across from each other.

To take this lesson to the next level, talk about the number of sides (faces) of a shape, the number of corners (vertices) and what shapes have common attributes.

Geometry lesson through basketball: What if learning was this much fun? This user database provides valuable insights.

As well as being central to geometry, it helps with reading graphs, rearranging formulae and problem solving. In the meantime, though, parents can help their children develop spatial skills at home.

But although children in England excel in mathematics compared to many countries, their scores in geometry are significantly below their overall mathematics scores.

This study describes the implementation and effects of a 32-week teacher-led spatial reasoning intervention in K–2 classrooms. The intervention targeted spatial visualization skills as an integrated ...

At Battle High School in Columbia, Mo., students in geometry class have swapped their compasses and protractors for hammers and hard hats. And they're doing it for a good cause.