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Polygons and regular polygons

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Subject

Mathematics

Grade

Grade 10 - 11

Publisher

yTeach Publisher

Resource types

Whiteboard presentation

Teaching type

Teaching object

Term

Grade 10 Term 2

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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.
Connected with
Polygons and regular polygons [Class activity]
Consists of
Examples of irregular polygons [Whiteboard exercise]
Diagonals of polygons [Whiteboard exercise]
Number of diagonals of an  n-gon [Whiteboard exercise]
Diagonals and sides of polygons [Whiteboard exercise]
Angle sum in some polygons [Animation]
Angle sum of a polygon [Whiteboard exercise]
Finding the sum of the interior angles [Whiteboard exercise]
The sum of the exterior angles of a convex pentagon [Animation]
The sum of the exterior angles of a hexagon [Whiteboard exercise]
The sum of the exterior angles of a convex polygon [Animation]
The sum of the exterior angles of a pendecagon [Whiteboard exercise]
A matchstick proof [Animation]
Finding the angles [Whiteboard exercise]
Regular polygons [Animation]
Regular or irregular? [Whiteboard exercise]
Honey combs [Animation]
Building a regular polygon [Whiteboard exercise]
The central angle of a regular polygon [Whiteboard exercise]
The interior angle of a regular polygon – proof (1) [Animation]
The interior angle of a regular polygon – proof (2) [Animation]
Finding the measure of interior angles [Whiteboard exercise]
The exterior angle of a regular polygon – proof (1) [Animation]
The measure of the angles [Whiteboard exercise]
The exterior angle of a regular polygon – proof (2) [Animation]
Regular polygons and their exterior angles [Whiteboard exercise]
Drawing an equilateral triangle [Animation]
Programming to draw regular polygons [ws]
Construction of regular polygons [ws]
Construction of a triangle [Animation]
Construction of a hexagon [Animation]
Construction of a pentagon [Animation]
Construction of a dodecagon [Animation]
A star [Animation]
Star polygons [Animation]
The most famous star [Animation]
Matches with
Copyright YDP SA
Keywords

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

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