This is the students’ version of the page. Log in above for the teachers’ version.
Names of polygons
Drag the slider across to see the names of polygons with up to 13 sides.
See G4a – Properties of special triangles and quadrilaterals for more on particular types of triangles and quadrilaterals.
2D geometry – terms and notation
This lesson covers the following key words: edge, vertex, equal edges and angles, and parallel.
The definitions of acute, right, obtuse and reflex angles are covered in lesson G15a.
Teachers: log in to access these.
Teachers: log in to view this content.