Concept explainers
(a)
To Find: the number of common internal tangents can be drawn the figure.
(a)
Answer to Problem 2CE
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 internal tangents can be drawn the figure.
(b)
Answer to Problem 2CE
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 not empty..
Given figure has two external tangents as shown below.
Therefore, the answer is one.
(c)
To Find: the number of common internal tangents can be drawn the figure.
(c)
Answer to Problem 2CE
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 not empty.
The above figure has no common internal tangent.
Therefore, the answer is zero.
(d)
To Find: the number of common internal tangents can be drawn the figure.
(d)
Answer to Problem 2CE
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 not empty.
The above figure has no common internal tangent.
Therefore, the answer is zero.
(e)
To Find: the number of common internal tangents can be drawn the figure.
(e)
Answer to Problem 2CE
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 not empty.
The above figure has no common internal tangent.
Therefore, the answer is zero.
(f)
To Find: the number of common internal tangents can be drawn the figure.
(f)
Answer to Problem 2CE
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 not empty..
The above figure has no common internal tangent.
Therefore, the answer is zero.
Chapter 9 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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