In this activity students have to solve angle problems and specify each angle fact that they used in a grid. They then compare their methods to those used by their partner – the idea is to generate ...

Parallel lines are straight lines which have the same direction and so never meet. Arrowheads show lines are parallel. A straight line that cuts a pair of parallel lines is called an intersecting ...

Parallel lines are lines which are always the same distance apart and never meet. Arrowheads show lines are parallel. When a pair of parallel lines is cut with another line known as an intersecting ...

Angles of elevation and depression are angles that are given from above or below a horizontal perspective. For example the angle that is made when you look up at something is an angle of elevation.

While matplotlib currently provides a degree of hatch fill functionality with set_hatch, fine control of the angle and density of hatch lines isn't straightforward. The current functionality only ...