
Concept explainers
(a)
To Find: the number of common external tangents can be drawn the figure.
(a)

Answer to Problem 1CE
Two.
Explanation of Solution
Given:
Figure is given.
A tangent is external tangent if the intersection of tangent and line joining centres of two
Given figure has two external tangents as shown below.
Therefore, the answer is two.
(b)
To Find: the number of common external tangents can be drawn the figure.
(b)

Answer to Problem 1CE
Two.
Explanation of Solution
Given:
Figure is given.
A tangent is external tangent if the intersection of tangent and line joining centres of two circles is empty.
Given figure has two external tangents as shown below.
Therefore, the answer is two.
(c)
To Find: the number of common external tangents can be drawn the figure.
(c)

Answer to Problem 1CE
Two.
Explanation of Solution
Given:
Figure is given.
A tangent is external tangent if the intersection of tangent and line joining centres of two circles is empty.
Given figure has two external tangents as shown below.
Therefore, the answer is two.
(d)
To Find: the number of common external tangents can be drawn the figure.
(d)

Answer to Problem 1CE
Two.
Explanation of Solution
Given:
Figure is given.
A tangent is external tangent if the intersection of tangent and line joining centres of two circles is empty.
Given figure has two external tangents as shown below.
Therefore, the answer is two.
(e)
To Find: the number of common external tangents can be drawn the figure.
(e)

Answer to Problem 1CE
one
Explanation of Solution
Given:
Figure is given.
A tangent is external tangent if the intersection of tangent and line joining centres of two circles is empty.
Given figure has two external tangents as shown below.
Therefore, the answer is one.
(f)
To Find: the number of common external tangents can be drawn the figure.
(f)

Answer to Problem 1CE
Zero.
Explanation of Solution
Given:
Figure is given.
A tangent is external tangent if the intersection of tangent and line joining centres of two circles is empty.
Above figure has no common tangent.
Therefore, the answer is zero.
Chapter 9 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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Calculus: Early Transcendentals (2nd Edition)
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