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Line 255:
Line 255: − + + Line 272:
Line 273: − [Note for teachers : Evaluate if it is possible to construct a direct common tangent without the third circle.]
The longest chord passes through the centre of the circle (view source)
Revision as of 12:44, 4 December 2013
, 12:44, 4 December 2013→Activity No # Construction of Direct common tangent
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*Process:
*Process:
The teacher can explain the step by step construction of Direct common tangent and with an example :
The teacher can explain the step by step construction of Direct common tangent and with an example.
[Note for teachers : Evaluate if it is possible to construct a direct common tangent without the third circle.]
Developmental Questions:
Developmental Questions:
#What is a tangent
#What is a tangent
# Identify the two right angled triangles formed from the figure ? What do you understand ?
# Identify the two right angled triangles formed from the figure ? What do you understand ?
*Evaluation:
*Evaluation:
# Is the student able to comprehend the sequence of steps in constructing the tangent.
# Is the student able to comprehend the sequence of steps in constructing the tangent.
# Is the student able to identify error areas while constructing ?
# Is the student able to identify error areas while constructing ?