Difference between revisions of "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. | ||
| − | === | + | === Objectives === |
| − | + | * To understand area enclosed by two radii is sector. | |
| − | + | ===Estimated Time=== | |
| − | + | *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. |
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| − | <span></span | + | ===Materials/ Resources needed=== |
| − | + | Non digital: Laptop, geogebra file, projector and a pointer. | |
| − | + | ||
| + | Geogebra file: [https://ggbm.at/fqssprue Arcs and Sector of a circle] | ||
| + | |||
| + | {{Geogebra|fqssprue}} | ||
| + | |||
| + | ===Process (How to do the activity)=== | ||
| + | <span></span><span></span> | ||
# Move the endpoints of the sector and help them understand the types of sector. | # Move the endpoints of the sector and help them understand the types of sector. | ||
| − | + | ||
# Name all the points on the circumference. | # Name all the points on the circumference. | ||
# Name the endpoints of the sector. | # Name the endpoints of the sector. | ||
# Name the major and minor sectors. | # Name the major and minor sectors. | ||
# What can you say about the two straight lines of the sector? | # What can you say about the two straight lines of the sector? | ||
| − | *Evaluation | + | *'''Evaluation''' |
# Name the special types of sector? | # Name the special types of sector? | ||
| − | |||
# Give some examples of sector. | # Give some examples of sector. | ||
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| + | [[Category:Circles]] | ||
Latest revision as of 05:54, 7 November 2019
Slice of a circle enclosed between any two radii is called a sector.Semicircle and quadrant are special types of sectors.
Objectives
- To understand area enclosed by two radii is sector.
Estimated Time
- 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?
- Evaluation
- Name the special types of sector?
- Give some examples of sector.