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From Karnataka Open Educational Resources
The longest chord passes through the centre of the circle (view source)
Revision as of 11:56, 4 December 2013
, 11:56, 4 December 2013→Concept # Cyclic quadrilateral
# Name this special quadrilateral.
# Name this special quadrilateral.
*Activity No # 2.
*Activity No # 2.Properties of a Cyclic quadrilateral
*Estimated Time
*Estimated Time: 45 minutes
*Materials/ Resources needed
*Materials/ Resources needed
coloured paper, pair if scissors, sketch pen, carbon paper, geometry box
*Prerequisites/Instructions, if any
*Prerequisites/Instructions, if any
# The students should know a circle and a quadrilateral.
# They should follow the instructions carefully.
*Multimedia resources
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*Process:
# Draw a circle of any radius on a coloured paper and cut it.
# Paste the circle cut out on a rectangular sheet of paper.
# By paper folding get chords AB, BC, CD and DA in order.
# Draw AB, BC, CD & DA. A cyclic quadrilateral ABCD is obtained.
# Make a replica of cyclic quadrilateral ABCD using carbon paper.
# Cut the replica into 4 parts such that each part contains one angle .
# Draw a straight line on a paper.
# Place angle BAD and angle BCD adjacent to each other on the straight line.Write the observation.
# Place angle ABC and angle ADC adjacent to each other on the straight line . Write the observation.
# Produce AB to form a ray AE such that exterior angle CBE is formed.
# Make a replica of angle ADC and place it on angle CBE . Write the observation.
Developmental Questions
*Evaluation
*Evaluation
*Question Corner
*Question Corner
