Question Detail
Question
When constructing a tangential curve of radius R internally to two circles of radii r1 and r2 (page 21), what radii are used for the arcs drawn from the centers A and B of the given circles to find the center O of the tangential curve?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Page 21, step 3 states: 'With centre A and radius R-r1, draw an arc' and step 4 states: 'With centre B and radius R-r2, draw an arc to intersect the first arc at O.'
Hint
Refer to steps 3 and 4 under 'To Construct a Curve Tangential to Two Circles' for internal tangency.