View source for Chord length and distance for centre of the circle

For a chord the distance from the center is the   perpendicular distance of the chord such that it passes through the center.

===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 :  [https://ggbm.at/tbv5xzfg Chord	length and perpendicular distance.ggb]
{{Geogebra|tbv5xzfg}}

===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?

{| class="wikitable"
|Observation
|Chord 1

Length
|Distance from centre
|Chord 2

Length
|Distance from centre
|-
|
|
|
|
|
|-
|
|
|
|
|
|-
|
|
|
|
|
|-
|
|
|
|
|
|-
|
|
|
|
|
|}

[[Category:Circles]]