Question Detail
Question
When constructing a common cross tangent to two unequal circles with radii R and r (page 16), what specific radius is used for the circle drawn from the center of the larger circle (O) to cut the semi-circle at B?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Page 16, step 4 states: 'Draw a circle centre O with radius (R+r) to cut semi-circle at B.'
Hint
Review step 4 for 'To Construct a Cross Tangent to Two UNEqual Circles' on page 16.