Polygons can be regular or irregular in shape. A polygon is a closed 2D shape with at least three sides. A regular polygon is a polygon with all equal sides and angles. An irregular polygon is a ...

Ontario’s new Grade 9 math course is part of the province’s four-year mathematics strategy to ensure students have the skills they need for the future. Grade 9 math was last updated in 2005. There has ...

The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Ontario Minister of ...