Is circle a Polygon ? - A debate
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Objectives
Estimated Time
40 minutes
Prerequisites/Instructions, prior preparations, if any
Ensure that lesson on polygons is done.
Materials/ Resources needed
Laptop, geogebra file, projector and a pointer.
This geogebra file has been created by maths STF teachers.
Process (How to do the activity)
- How many sides does this figure have ?
- Name the figure formed.
- What is happening to the length of the sides as the number of sides is increased ?
- What shape is this ?
- So, can circle be considered a polygon ? Justify
- Evaluation:
- Are the students able to comprehend that the number of sides is getting infinite as the shape resembles a circle ?
- Are the students able to appreciate the application of polygon anology to circles.
- Question Corner;
Debate between two groups with these two perspectives.
- Circle seems to have derived from polygons . Circle can be considered a polygon.
Vs
- A polygon is defined by a certain number of sides having non zero length. Then how can circle be a polygon ? (hint: all radii in a circle should be equal ???)