Perpendicular bisector of a chord passes through the center of a circle
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Activity No # 1 - Perpendicular bisector of a chord passes through the center of a circle
Estimated Time
20 minutes
Materials/ Resources needed
Laptop, Geogebra file, projector and a pointer.
Prerequisites/Instructions, if any
- Basic concepts of a circle and its related terms should have been covered.
Multimedia resources
Website interactives/ links/ simulations
This geogebra has been created by ITfc-Edu-team.
Process (How to do the activity)
- Show the children the geogebra file and ask the listed questions below.
Developmental Questions (What discussion questions)
- What is a chord ?
- At how many points on the circumference does the chord touch a circle .
- What is a bisector ?
- What is a perpendicular bisector ?
- In each case the perpendicular bisector passes through which point ?
Evaluation (Questions for assessment of the child)
- What is the angle formed at the point of intersection of chord and radius ?
- Are the students able to understand what a perpendicular bisector is ?
- Are the students realising that perpendicular bisector drawn for any length of chords for any circle always passes through the center of the circle .
Question Corner
- What do you infer ?
- How can you reason that the perpendicular bisector for any length of chord always passes through the centre of the circle.
Activity Keywords
- Geogebra
- Perpendicular bisector
- Chord
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