Polygons and regular polygons

Subject: Mathematics

Grade: Lower Secondary

Publisher: YDP

Resource types: Class activity

Resource ID: e142
Description:

At the end of this activity, students should be able to:
understand what irregular and regular polygons are
- calculate the number of diagonals in a polygon
- calculate the sum of the angles in a polygon
- calculate the sum of the exterior angles of a convex polygon
- calculate the central angle in a regular polygon
- calculate the interior and the exterior angles of a regular polygon
- draw regular n-gons.

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Polygons and regula... Whiteboard presentation

Consists of...
Examples of irregul... Student activity Diagonals of polygons Student activity Angle sum of a polygon Student activity The sum of the exte... Student activity Examples of regular... Student activity The central angle o... Student activity The interior angle ... Student activity The exterior angle ... Student activity Programming to draw... Student activity Construction of reg... Student activity Star polygons Student activity

Relevant to...

Secondary School

Lower Secondary (Grades 7-9)

Mathematics

Geometry and transformations

15. Polygons and regular polygons

YDP SA

Keywords

angle, geometry, regular, polygon, diagonal, polygons, Polygons and regular polygons

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