Sector of a circle
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Slice of a circle enclosed between any two radii is called a sector.Semicircle and quadrant are special types of sectors.
- To understand area enclosed by two radii is sector.
- 15 minutes
Prerequisites/Instructions, prior preparations, if any
- The students should know a circle, centre, radius,circumference and a sector.
- They should know that circle is a planar figure.
Materials/ Resources needed
Non digital: Laptop, geogebra file, projector and a pointer.
Geogebra file: Arcs and Sector of a circle
Download this geogebra file from this link.
Process (How to do the activity)
- Move the endpoints of the sector and help them understand the types of sector.
- Name all the points on the circumference.
- Name the endpoints of the sector.
- Name the major and minor sectors.
- What can you say about the two straight lines of the sector?
- Name the special types of sector?
- Give some examples of sector.