Difference between revisions of "Chord length and distance for centre of the circle"
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m (Preeta moved page Chord length and distance for center of the circle to Chord length and distance for centre of the circle without leaving a redirect) |
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− | === | + | ===Objectives=== |
− | + | Understand the relation between chord length and distance from the center | |
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===Estimated Time=== | ===Estimated Time=== | ||
+ | 30 minutes | ||
=== Prerequisites/Instructions, prior preparations, if any === | === Prerequisites/Instructions, prior preparations, if any === | ||
+ | Prior knowledge of point, lines, angles, polygons | ||
===Materials/ Resources needed=== | ===Materials/ Resources needed=== | ||
+ | * Digital : Computer, geogebra application, projector. | ||
+ | * Non digital : Worksheet and pencil, compass, strings | ||
+ | * Geogebra files : Chord length and perpendicular distance.ggb | ||
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===Process (How to do the activity)=== | ===Process (How to do the activity)=== | ||
− | + | * For a chord in a circle construct a perpendicular through the center of the circle. | |
− | + | * Move chord closer to center of the circle, note the perpendicular distance in the worksheet. | |
− | What | + | * What can you notice between chord length and perpendicular distance? When is the perpendicular distance equal to zero? |
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+ | |Observation | ||
+ | |Chord 1 | ||
− | + | Length | |
+ | |Distance from centre | ||
+ | |Chord 2 | ||
− | + | Length | |
+ | |Distance from centre | ||
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Revision as of 10:43, 7 May 2019
Objectives
Understand the relation between chord length and distance from the center
Estimated Time
30 minutes
Prerequisites/Instructions, prior preparations, if any
Prior knowledge of point, lines, angles, polygons
Materials/ Resources needed
- Digital : Computer, geogebra application, projector.
- Non digital : Worksheet and pencil, compass, strings
- Geogebra files : Chord length and perpendicular distance.ggb
Process (How to do the activity)
- For a chord in a circle construct a perpendicular through the center of the circle.
- Move chord closer to center of the circle, note the perpendicular distance in the worksheet.
- What can you notice between chord length and perpendicular distance? When is the perpendicular distance equal to zero?
Observation | Chord 1
Length |
Distance from centre | Chord 2
Length |
Distance from centre |